Borehole · Risk register · free tier
fabiolb/fabio
Free reading: not for reliance
Borehole badge for fabiolb/fabio
09108b4 · 1,492 commits · 403 files
Issued 2026-11-03

Reads strong: 4 of 6 rated dimensions are strong, 2 are adequate and none is significant.

104 checks ran across 6 assessable dimensions. Architecture & Codebase — including AI provenance and Organization & Key-Person Risk are adequate. 6 findings, each with evidence. One dimension cannot be assessed without an acquirer. Last commit 28 October 2026.

This repository reads strong. Show it in your README: the badge links to a page where anyone can check the reading. If you embed it: link it to the report, remove it if the report is delisted, and do not present it as a certification or an endorsement.

[![Borehole reading, not a certification](https://borehole.dev/badge/fabiolb/fabio/09108b4.svg "Borehole free reading: not for reliance. See the full report.")](https://borehole.dev/verify/GFMEYXSQZ5AF?via=badge)
Published under today's rules. The verification code attests to this reading as it was stored. This page differs from it as follows.
  • 2 findings from checks Borehole's calibration found wrong more often than right are no longer published.
strong adequate significant findings not assessable from a repository
Provenance disclosure does not affect any rating
0% of the code standing today was written in AI-declared commits
0% of lines still in the tree 0 of 43,822 0% of lines ever added these differ when early hand-written code has since been replaced
0% of lines added in the last 12 months (since 2025-11-03) arrived in AI-declared commits: 0/113 commits, confidence low. Also a floor.
0/1,288 commits declaring an agent
confidence: moderate
  • 3% of non-merge commits carry any trailer at all
  • low trailer coverage: the convention may not be in consistent use
  • no widespread author/committer date divergence
  • deep scan blamed 388 of 388 counted files
913,231 lines excluded as lockfiles, vendored or generated.
This is a lower bound. It counts what the repository declares. Undeclared AI authorship is invisible here, and a single rebase removes the trailers this rests on. Absence of a declaration is absence of disclosure, not absence of AI authorship.

Architecture & Codebase — including AI provenance

01 · adequate · ratings ↑
01.25

1 base image floats: no version, or `latest`

adequate

1 of 2 `FROM` lines in product Dockerfiles name an image without a version, or with `latest`. Each build pulls whatever the registry serves that day, so the image that ships can change without a commit, and last month's build cannot be reproduced. Pin a version, or a digest.

Evidence
Dockerfile Dockerfile:1 — base image without a version
Respond to this finding

Your response is published beside the finding, not instead of it. A finding you can argue with is the point — and a wrong one is calibration data we want.

An owner's response is removed only when it is unlawful, impersonates someone, publishes personal data or a credential, or is not about the finding. Disagreeing with the report is never a reason. To report a response, or to reach us about one, write to takedown@borehole.dev.

Engineering Process & SDLC Maturity

02 · strong · ratings ↑

No finding. 16 checks ran and none fired; the rejection log below says why each did not.

Organization & Key-Person Risk

03 · adequate · ratings ↑
03.5

The contributor who wrote more than half of this has not committed here for more than three years

adequate

One person authored more than half of 1,265 commits and has not committed here for more than three years, while the repository has kept moving. The concentration figure alone would not show this. Whoever is changing this code now is not the person who wrote most of it, which is the situation an acquirer is usually told they are avoiding. The history shows only that no commits of theirs landed here, not why.

Evidence
last-commit-by-top-author last commit more than three years ago, measured to the survey
git shortlog -sn top author more than half of 1,265 commits
Respond to this finding

Your response is published beside the finding, not instead of it. A finding you can argue with is the point — and a wrong one is calibration data we want.

An owner's response is removed only when it is unlawful, impersonates someone, publishes personal data or a credential, or is not about the finding. Disagreeing with the report is never a reason. To report a response, or to reach us about one, write to takedown@borehole.dev.

Product & Engineering Maturity

04 · strong · ratings ↑

No finding. 19 checks ran and none fired; the rejection log below says why each did not.

Security & Reliability Posture

05 · strong · ratings ↑
Notes that do not affect this rating
05.27

The build runs third-party code it does not pin

adequate

7 third-party CI actions are referenced by a tag or branch rather than a commit, so they run whatever that tag points to on the day. Tags have been moved to malicious commits in real supply-chain attacks, and a piped script is whatever the server returns that minute. Pinning to a commit is the fix, and it is small.

A note that does not affect this rating: notes like it are common in well-run projects.

Evidence
.github/workflows/build.yml .github/workflows/build.yml:15 — action pinned by tag
.github/workflows/build.yml .github/workflows/build.yml:25 — action pinned by tag
Respond to this finding

Your response is published beside the finding, not instead of it. A finding you can argue with is the point — and a wrong one is calibration data we want.

An owner's response is removed only when it is unlawful, impersonates someone, publishes personal data or a credential, or is not about the finding. Disagreeing with the report is never a reason. To report a response, or to reach us about one, write to takedown@borehole.dev.

05.26

1 locked dependency has published vulnerabilities

adequate

1 of 88 locked dependencies match 1 published advisories in OSV. A lockfile says which version is installed, not whether the flawed code is reachable from this product, so each needs a look. Most are fixed by an upgrade, and the advisory names the version.

A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated.

Evidence
go.mod go.mod — github.com/osrg/gobgp/v4 v4.8.0: GO-2026-4736 (unrated)
Respond to this finding

Your response is published beside the finding, not instead of it. A finding you can argue with is the point — and a wrong one is calibration data we want.

An owner's response is removed only when it is unlawful, impersonates someone, publishes personal data or a credential, or is not about the finding. Disagreeing with the report is never a reason. To report a response, or to reach us about one, write to takedown@borehole.dev.

05.65

6 advisories against this project in the last 24 months, 5 high or critical

adequate

The newest was published on 2026-09-09. A project that publishes advisories is telling its users about its fixes, and the count and pace say how much security work it carries. None of them affects the surveyed version. The record is incomplete: NVD: 1 record names fabio with nothing tying it to this repository (CVE-2025-23652).

A note that does not affect this rating: it describes the project's advisory record, and no advisory in it is known to affect the surveyed commit.

Evidence
GHSA-h66f-g4vc-vj55 2026-09-09: GHSA-h66f-g4vc-vj55 (high), fixed in 1.8.0: Unauthenticated Runtime Configuration Disclosure via Admin API `/api/config` in fabio
GHSA-m4gq-923h-4w8r 2026-09-09: GHSA-m4gq-923h-4w8r (critical), fixed in 1.8.0: Default Unauthenticated Admin Write API Enables Routing Takeover
GHSA-247f-2cq2-v793 2026-09-09: GHSA-247f-2cq2-v793 (high), fixed in 1.8.0: fabio: setting `proxy.header.clientip` to `X-Real-Ip` silently makes the client-IP header attacker-controlled
GHSA-4hrh-34w3-5ww8 2026-08-09: GHSA-4hrh-34w3-5ww8 (critical), fixed in 1.7.3: Route selection uses the raw un-normalized path
GHSA-fq95-v8xc-jm3v 2026-07-03: GHSA-fq95-v8xc-jm3v (moderate), fixed in 1.7.2: Fabio - Incomplete fix for CVE-2025-48865: operator-configured trust headers (clientip/tls/requestid) still strippable via the Connection header
Respond to this finding

Your response is published beside the finding, not instead of it. A finding you can argue with is the point — and a wrong one is calibration data we want.

An owner's response is removed only when it is unlawful, impersonates someone, publishes personal data or a credential, or is not about the finding. Disagreeing with the report is never a reason. To report a response, or to reach us about one, write to takedown@borehole.dev.

Observability & Operations

06 · strong · ratings ↑
A note that does not affect this rating
06.9

No error reporter is wired in

adequate

Nothing in the service initialises an error reporter (Sentry, Rollbar, Bugsnag, Honeybadger or an APM agent). An exception in production reaches a person only if someone is reading the logs, which usually means a customer reports it first.

A note that does not affect this rating: notes like it are common in well-run projects.

Evidence
error reporting no error reporter initialised
Respond to this finding

Your response is published beside the finding, not instead of it. A finding you can argue with is the point — and a wrong one is calibration data we want.

An owner's response is removed only when it is unlawful, impersonates someone, publishes personal data or a credential, or is not about the finding. Disagreeing with the report is never a reason. To report a response, or to reach us about one, write to takedown@borehole.dev.

Fit with the Acquirer

07 · not assessable · ratings ↑

Not rated: structurally not assessable from a repository. What a person adds here.

Check it on the running system

4 checks against the running system follow from the findings above: what a buyer's engineer will try, how to run it first, and what to have ready. A paid survey of this repository includes them. See the tiers.

A paid survey of a public repository is also reviewed: a language model reads each finding against the code and withdraws only findings it judges the code contradicts, each listed with its reason. The review is a language model's reading of the findings against the code, and it can be wrong. It never adds a finding, never raises a band, and never removes a finding from a proven check or an advisory that affects the surveyed version.

What a person adds

The survey reads what the repository can show. The code cannot settle these questions, and on them this report states nothing. Each says where its answer lives: your own engineer, the company, or an assessor you choose can settle it. Questions marked measured open with something this repository shows.

Architecture & Codebase — including AI provenance

01 · full coverage
  1. Is the architecture right for the next three years of the product? Answer lives in: Your architects, with the product roadmap01.39
  2. Were the home-grown components reasonable choices when they were made, and are they now? Answer lives in: The team's reasoning at the time01.40

Engineering Process & SDLC Maturity

02 · high coverage
  1. Is review real or a rubber stamp? Comment depth and time to approve need the pull request history. Answer lives in: The code host's pull request data02.32
  2. Is delivery planned and measured, or heroic? Answer lives in: The issue tracker: backlog, sprint history, estimate accuracy02.38
  3. How are incidents run, reviewed and learned from? Answer lives in: Tickets, chat and postmortems02.37

Organization & Key-Person Risk

03 · partial coverage
  1. measured One contributor authored more than half of the commits in this history. Is that person part of the transaction, and for how long after it? Answer lives in: The deal terms03.29
  2. Who mentors whom, and would that survive a departure? Answer lives in: The team; review history only suggests candidates03.28
  3. Can the team grow, and who stands behind the top three contributors? Answer lives in: Recruiting data and the org chart03.30
  4. Is the seniority mix sound, and will pay survive your salary bands? Answer lives in: HR data03.31
  5. Is the pace sustainable? Commit times cannot say: git keeps no reliable local time. Answer lives in: Interviews and on-call history03.14
  6. Does the team want to stay after close? Answer lives in: Interviews03.32
  7. How are decisions made and disagreements resolved? Answer lives in: Time with the team03.33

Product & Engineering Maturity

04 · minimal coverage
  1. measured 91 commits landed in the last year, against 60 the year before (+52%). What drove it: new people, a deadline, or code produced faster than before? Answer lives in: The team04.11
  2. Can this team deliver the stated roadmap on the stated timeline? Answer lives in: The data room and the team's record of estimates04.32
  3. Does leadership know about the debt, and is time budgeted to repay it? Answer lives in: Budget and roadmap decisions04.31
  4. Is the engineering shape consistent with the commercial story? Answer lives in: Revenue, customer and churn data04.33

Security & Reliability Posture

05 · partial coverage
  1. measured No threat model is in the tree of what looks like a running service. Does one exist elsewhere, and who owns it? Answer lives in: The security owner05.43
  2. What has actually broken, how often, and how badly? Answer lives in: Ticketing and chat05.41
  3. What did external testing find, and was it fixed? Answer lives in: Reports in the data room05.42
  4. What is the SOC 2, ISO 27001 or GDPR status, and where is the evidence? Answer lives in: Audit reports; policy files in the tree are not evidence05.44

Observability & Operations

06 · partial coverage
  1. measured Nothing in the tree backs up or restores data. How is data backed up, and has a restore ever been rehearsed? Answer lives in: The operations team06.19
  2. measured No alert rule is defined in the repository. Where are alerts defined, who receives them, and when did one last fire? Answer lives in: The alerting tool and the on-call rota06.10
  3. Are the dashboards opened, the alerts acknowledged and the pages answered? Answer lives in: Pager history and dashboard logs06.29
  4. Are the service-level objectives actually met? Answer lives in: Production metrics06.30
  5. Who carries the pager, and how often does it go off? Answer lives in: Pager exports and interviews06.31
  6. What does it cost to run, and how much headroom is there? Answer lives in: Cloud billing and capacity plans06.32

Fit with the Acquirer

07 · none coverage

Not rated: structurally not assessable from a repository.

  1. This is primarily a Go codebase. Does your engineering organisation already run Go in production, or would this be the first? 07.1
  2. The bulk of this system sits in proxy/, route/, build/. Which of your existing systems would each of those have to absorb or replace? 07.10
  3. The repository carries deployment configuration (Dockerfile and 1 more). Does that match your deployment and on-call model, or does it need rehosting first? 07.2
  4. What is your tolerance for the findings above remaining unaddressed for the first two quarters after close, given everything else that will compete for this team's time?
  5. Which of these systems duplicate yours, and which get retired? Answer lives in: Your architecture07.11
  6. What will integration cost, and in what order? Answer lives in: The engagement07.12
  7. Where does the team land in your organisation, and who reports to whom? Answer lives in: Your org design07.13
  8. Are there earn-outs, retention packages or contractor IP to assign? Answer lives in: Deal terms07.14
  9. Do customer contracts limit hosting, regions or vendors? Answer lives in: Customer contracts07.15

A human assessment is Borehole's own paid service, €12,000+ (total price is determined per engagement; travel billed at cost). It is not independent of this report: the same business produced both. It is a separate contract, with its own scope, terms and reliance.

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Rejection log — 98 signals that ran and did not fire

Appendix: rejection log — 98 signals that ran and did not fire

Published on purpose. A signal that looked and decided not to fire has told you something, and this is the calibration data behind every threshold above.

Looked, and found nothing — 72

SignalWhat it found
04.hotspot_concentration change is spread across the codebase rather than pooling in a few filesfiles 3,143 · top5 share 0.064
04.debt_markers debt markers are sparsemarkers 27 · per kloc 0.86 · lines read 31,416
04.dependency_sprawl direct dependency counts are unremarkable
04.test_growth test effort kept pace with code writtenlate test per code 1.282 · early test per code 0.582
04.churn_trend rework is not rising against new worklate delete per insert 0.574 · early delete per insert 0.399
04.fixes_with_tests fixes usually come with a testfixes 32 · share 0.469 · with tests 15
04.compat_layers little code is kept for the old wayshare 0.0 · code files 104 · compat files 0
06.telemetry_presence a telemetry or error-reporting library is referencednote presence only; whether anyone watches it is not visible here · matches 8
06.structured_logging a structured logging library is referencedmatches 2
06.healthcheck_presence a health or readiness check is defined
06.telemetry_depth the service is visible in more than one way
06.print_logging raw prints are few, or outnumbered by logger callsprints 12 · logger calls 0
06.correlation_ids a request can be followed through the logstracing False · request id sites 5
06.usage_reporting_default the product's code names no reporting hostsettings on 0 · settings off 0
06.environment_branching environment differences live in configurationsites 0
06.migrate_on_start migrations do not run at container start
03.contributor_concentration no single contributor dominates the last 24 monthsyears 11.0 · window last 24 months · authors 111
03.active_contributors more than one contributor active in the trailing yearall time 111 · active 12mo 9
03.knowledge_silos every substantial directory has been touched by more than one personauthors 111 · directories 11
03.drive_by_contributors an open contributor base, where one-commit contributors are normalauthors 111 · one off share 0.613
03.critical_path_ownership more than one person changes the critical pathsauthors 14
03.second_contributor_attrition the second and third contributors are still active
02.merge_discipline a meaningful share of recent change carries evidence of reviewmerges 92 · window last 24 months · with tracked 2
02.ci_presence CI configuration is present in the working treecount 3
02.test_presence tests are present in a normal proportion to sourcetests 50 · source 146 · test ratio 0.342
02.release_cadence tags are presenttags 77
02.conventional_commits commit subjects generally carry contentsampled 1,288 · low content share 0.021
02.branch_protection_hints process scaffolding is present in the repository
02.skipped_tests few tests are switched offfocused 0 · skipped 0 · test files 52
02.ci_test_gating no test run in CI is written so that it cannot failconfigs 3
02.revert_share change is rarely undoneshare 0.0 · reverts 0 · recent commits 151
02.dependency_update_cadence dependencies move with the codelockfiles 1 · commits since 0 · days since lockfile changed 0
02.flaky_test_markers tests are not retried until they passtest retries 0 · suite retries 0
02.lint_in_build a linter or formatter runs in the buildwired 2 · ci configs 3 · product files 104
02.long_lived_branches the typical branch reaches the trunk quicklyshare 0.121 · merges 91 · long lived 11
02.commit_size changes arrive in reviewable sizesshare 0.0 · commits 130 · over 2000 lines 0
01.burst_import the largest burst was vendored dependencies (80% of it), which explains the rate: translations arrive from a vendor in bulk, dependencies and generated code are committed whole, a merged pull request is dated when it merged, not when it was written, a branch merged by a merge commit was reviewed as one piece, and an export or mirror tool dates history when it replays itlargest commits 0b47229..bd57369 · bursts explained 1 · largest net added 2,123
01.initial_dump first commit is not a disproportionate share of the codebaseinsertions 5,766 · share of insertions 0.0059
01.message_uniformity commit subjects vary in wording and lengthlength stdev 28.51 · repeat share 0.169
01.revision_depth most files were revisited after they were first writtenfiles seen 124 · write once share 0.21
01.oversized_modules no module is an outlier against this codebase's own normlargest 1,224 · threshold 1,050 · median lines 105
01.duplicated_blocks little shipping code is repeated verbatim across filesshare 0.0074 · product files 96 · distinct blocks 8,213
01.swallowed_errors errors are rarely thrown awayloc 31,745 · files 2 · per kloc 0.19
01.unfinished_migration no language migration is stalled halfway
01.weights_in_git no model weights are committedfiles 0
05.committed_secrets no credential-shaped strings outside test and fixture pathsnote the working tree only; the history is 05.5 · patterns 8 · files read 341
05.security_guardrails at least one standard guard rail is configured
05.license_present a licence file is presentfound True
05.secrets_in_history no credential-shaped string was ever added outside test and fixture pathspatterns 8 · truncated False · added lines 874,733
05.container_runs_as_root every shipped Dockerfile drops to a non-root user or builds on a non-root base imagedockerfiles 1
05.secrets_management_pattern no environment file is committed outside tests and examplesenv files 0
05.outbound_timeouts outbound calls set timeouts, or are fewcalls without timeout 1
05.sql_from_strings no SQL is assembled from strings in product codefiles 0 · sites 0 · value interpolated 0
05.shell_from_strings product code does not build shell commands from stringssites 0
05.unsafe_deserialization no code-executing deserialiser in product codesites 0
05.privileged_workloads no workload runs privileged or in the host's namespacessites 0 · behind a setting or built here 0
05.credentials_in_deploy_config deployment configuration references secrets, never holds themfiles 0 · sites 0
05.signing_material no signing keystore or profile is committedfiles 0
05.license_vendored_unlicensed no vendored third-party code is committedcomponents 0
05.license_grant_unclear the licence is recognisable as MITclass permissive · license MIT
05.committed_native_libraries no widely used compiled library is committed to the productlibraries 0
04.api_versions_coexisting one API version is served, or none
04.deprecations_lingering few deprecations have outlived two yearsolder than two years 1 · files with deprecations 70
04.dependency_churn few dependencies were added and dropped within 60 daysdependencies seen 221 · added in two years 22 · removed within 60 days 2
04.ci_platforms_dropped no platform was dropped from CI in the last two years
04.repository_status the README's first screen states no end, move or freezestatements 0
02.development_elsewhere nothing says development happens elsewhereno pr statements 0 · mirror statements 0 · replayed commit share 0.0
05.licence_changes the root licence has not changed in the history readlicence versions 1 · unreleased changes 0
05.paid_edition no directory carries a separate paid-edition licencedirectories 0
04.releases_stopped releases keep pace with developmentmedian gap days 36.5 · days since last tag 55 · commits last 90 days 82
04.release_branch the newest release was cut from the branch surveyedelsewhere 9 · on branch 67 · tags in window 76
03.single_maintainer no file says one person maintains itstatements 0

Could not conclude, or did not apply — 26

Not a clean result. Each says why it could not answer here.

SignalWhy
04.eol_runtimeno pinned runtime version to check
04.fix_share_trendfewer than six busy quarters to compare
04.schema_churnno schema migrations to read
04.dependency_redundancyno JavaScript manifest to read
06.alert_rulesno alert rules in the repository; they may live in a console
06.deployed_image_floatsno deployment descriptor names an image
06.probes_identicalno Kubernetes probes
06.single_replicano Kubernetes deployments
06.release_markersfewer than 100 commits in the last year
06.feature_flagsno feature-flag service; flags may live elsewhere
03.bus_factor_trendfewer than three active years to compare
03.joiners_and_leaverstoo few regular contributors to see a trend
01.notebook_outputsnot a data or machine-learning repository
05.dependency_pinningno manifest whose pinning can be read without a lockfile
05.migration_reversibilitytoo few migrations to judge
05.resource_limitsno Kubernetes workload manifests
05.public_env_secretnot a frontend
05.unsafe_htmlnot a frontend
05.source_maps_shippednot a frontend
05.cleartext_trafficnot a mobile app
05.dataset_provenancenot a data or machine-learning repository
05.license_copyleft_inheritedno third-party code is committed to this repository, so the licences it depends on are resolved at build time and are not readable here
05.license_manifest_conflictno packaging manifest states a licence
04.flags_accumulatingfew or no feature flags in the history
05.project_advisoriesrecord incomplete: no advisory found in the sources that answered; NVD: 1 record names fabio with nothing tying it to this repository (CVE-2025-23652)
05.project_exploitedno affecting advisory is on CISA's Known Exploited list
BOREHOLE READING NOT A CERTIFICATION GFME-YXSQ-Z5AF 2026-11-03 · 09108B4 BOREHOLE.DEV/VERIFY

Anyone can check this report against the authoritative record — click the stamp, or enter GFME-YXSQ-Z5AF at borehole.dev/verify.

The code commits to the 106 checks this run performed, the bands they produced, and the commit they were read at. It does not cover checks written since.

Put the mark in your README

The image is wrapped in a link to the verification page, so a reader can check it rather than take it on trust. If you embed it: link it to the report, remove it if the report is delisted, and do not present it as a certification or an endorsement.

[![Borehole reading, not a certification](https://borehole.dev/badge/fabiolb/fabio/09108b4.svg "Borehole free reading: not for reliance. See the full report.")](https://borehole.dev/verify/GFMEYXSQZ5AF?via=badge)

Borehole reading GFME-YXSQ-Z5AF, not a certification

Where this scan ran

This scan ran on ordinary cloud infrastructure (cloud-run), not in a hardware-isolated confidential VM. Nothing about it is attested by Google.

What an attested survey proves, and what it does not.

What this scan did with the repository — 7 steps

Written by the steps themselves as they ran, not described afterwards. A hand-written account of a data flow drifts the first time somebody changes the flow and not the account.

AtStepDetail
0.0s read repository metadata from the GitHub API size mb: 31.6authenticated: False
4.1s cloned the repository to a temporary directory depth: full
5.4s read the git history commits: 1492tracked files: 403
60.4s ran the deterministic checks blame pass: Trueread working tree: False
60.4s recorded where this scan ran attested: Falseenvironment: cloud-run
72.1s kept the facts, never the source, for re-reading under new checks
72.1s deleting the working copy

Total 72.1s ·source content sent off this machine: none · calls to a language model: 0 · the clone was deleted when the survey ended

An automated reading of a repository's code and its history up to one commit, with public advisory records. It may be wrong, it is not legal, financial, investment or security advice, and it does not replace diligence by a qualified person. It is provided for information: nobody may rely on it (Borehole's terms, section 3).

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