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Size is not a defect on its own — some problems genuinely live in one place — but these are where merge conflicts, review fatigue and single-owner knowledge concentrate, and they are the first thing that slows an inheriting engineer down.","context_why":"A note that does not affect this rating: measured against its own codebase's median, it is below the 85th percentile of 382 surveyed projects' largest files, where this check begins to count."}],"signals_run":11,"conclusive_signals":10,"what_a_person_adds":[{"id":"01.38","kind":"H+","where":"The team","measured":"No architecture or design document is in the tree, across 1,869 product files.","question":"Where does the design live, and who holds it?"},{"id":"01.39","kind":"H","where":"Your architects, with the product roadmap","question":"Is the architecture right for the next three years of the product?"},{"id":"01.40","kind":"H","where":"The team's reasoning at the time","question":"Were the home-grown components reasonable choices when they were made, and are they now?"}]},{"id":"02","band":"adequate","name":"Engineering Process & SDLC Maturity","coverage":"high","findings":[{"id":"02.3","band":"adequate","layer":"deterministic","title":"Tests cover a thin slice of the codebase","signal":"test_presence","weight":"corroborating","evidence":[{"ref":"test-file-ratio","kind":"metric","detail":"101 test files / 1,676 source files"}],"observed":{"tests":101,"source":1676,"test_ratio":0.06},"dimension":"02","rationale":"101 test files against 1,676 source files (6.0%). This does not measure whether the tests are good, only whether enough of them exist for the codebase to be changed safely by someone who did not write it — which is exactly the situation after an acquisition."}],"signals_run":16,"conclusive_signals":14,"what_a_person_adds":[{"id":"02.32","kind":"H","where":"The code host's pull request data","question":"Is review real or a rubber stamp? Comment depth and time to approve need the pull request history."},{"id":"02.38","kind":"H","where":"The issue tracker: backlog, sprint history, estimate accuracy","question":"Is delivery planned and measured, or heroic?"},{"id":"02.37","kind":"H","where":"Tickets, chat and postmortems","question":"How are incidents run, reviewed and learned from?"}]},{"id":"03","band":"not assessable","name":"Organization & Key-Person Risk","coverage":"partial","findings":[{"id":"03.27","band":"adequate","layer":"deterministic","title":"Regular contributors fell from 5 to 2 in a year","signal":"joiners_and_leavers","weight":"corroborating","evidence":[{"ref":"regular contributors by year","kind":"metric","detail":"5 then 2; 2 stopped committing, 0 began"}],"observed":{"left":2,"joined":0,"regular_last_year":2,"regular_prior_year":5},"dimension":"03","rationale":"2 people who committed regularly the year before made no commits in the last year, and 0 new regular contributors arrived. Ask whether the work they did is still covered."}],"signals_run":10,"conclusive_signals":9,"what_a_person_adds":[{"id":"03.29","kind":"H","where":"The deal terms","question":"Which of the people who wrote this are part of the transaction, and for how long after it?"},{"id":"03.28","kind":"H","where":"The team; review history only suggests candidates","question":"Who mentors whom, and would that survive a departure?"},{"id":"03.30","kind":"H","where":"Recruiting data and the org chart","question":"Can the team grow, and who stands behind the top three contributors?"},{"id":"03.31","kind":"H","where":"HR data","question":"Is the seniority mix sound, and will pay survive your salary bands?"},{"id":"03.14","kind":"H","where":"Interviews and on-call history","question":"Is the pace sustainable? Commit times cannot say: git keeps no reliable local time."},{"id":"03.32","kind":"H","where":"Interviews","question":"Does the team want to stay after close?"},{"id":"03.33","kind":"H","where":"Time with the team","question":"How are decisions made and disagreements resolved?"}],"not_assessable_reason":"one author wrote nearly all of this repository's commits, so a finding about one contributor would be about someone its history all but names; the public report does not carry those, and does not rate this dimension without them","withheld_about_one_person":2},{"id":"04","band":"adequate","name":"Product & Engineering Maturity","coverage":"minimal","findings":[{"id":"04.17","band":"adequate","layer":"deterministic","title":"Python 3.9 is past end of life","signal":"eol_runtime","weight":"corroborating","context":true,"evidence":[{"ref":"docker/Dockerfile","kind":"path","path":"docker/Dockerfile","detail":"Python 3.9, end of life 2025-10-31"}],"observed":{"pinned":["python 3.9"],"eol_as_of":"2026-09-24"},"dimension":"04","rationale":"The code is pinned to Python 3.9 (end of life 2025-10-31). None of these receives security fixes any more; the first stopped on 2025-10-31. Moving off an unsupported runtime is rarely a one-line change, so a buyer should ask whether the upgrade is planned and what it touches.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."},{"id":"04.19","band":"adequate","layer":"deterministic","title":"5% of bug fixes add or change a test","signal":"fixes_with_tests","weight":"corroborating","evidence":[{"ref":"fix commits touching tests","kind":"metric","detail":"3 of 60"}],"observed":{"fixes":60,"share":0.05,"with_tests":3},"dimension":"04","rationale":"Of 60 fixes in the last 24 months, 3 touched a test. A fix without the test that would have caught the bug can quietly come back, and the suite never learns from what went wrong."},{"id":"04.14","band":"adequate","layer":"deterministic","title":"2 jobs are each done by more than one library","signal":"dependency_redundancy","weight":"corroborating","evidence":[{"ref":"aim/web/ui/package.json","kind":"path","path":"aim/web/ui/package.json","detail":"several libraries per job"}],"observed":{"jobs_doubled":{"CSS-in-JS":["stitches","styled-components"],"UI component kits":["antd","material-ui"]}},"dimension":"04","rationale":"Within a single package: CSS-in-JS: stitches, styled-components; UI component kits: antd, material-ui. Each duplicate is bundle size, two ways of doing the same thing in one codebase, and two upgrade paths to maintain. It is usually the residue of a migration that stopped halfway."},{"id":"04.62","band":"adequate","layer":"deterministic","title":"Releases are cut from another branch than the one surveyed","signal":"release_branch","weight":"corroborating","context":true,"evidence":[{"ref":"9e93b365f","kind":"commit","detail":"tag v4.0.3"}],"observed":{"elsewhere":61,"on_branch":117,"tags_in_window":178,"direction_known":true,"later_on_branch":0},"dimension":"04","rationale":"The newest release, v4.0.3, is not on the branch this survey read; the newest release on it is v3.29.1. The shipped product may differ from what this report describes. Survey the release branch too.","context_why":"A note that does not affect this rating: notes like it are common in well-run projects."}],"signals_run":19,"conclusive_signals":16,"what_a_person_adds":[{"id":"04.11","kind":"H+","where":"The team","measured":"31 commits landed in the last year, against 90 the year before (-66%).","question":"Is that maintenance mode, a pivot, or fewer people working on it? The count looks the same for all three."},{"id":"04.34","kind":"H+","where":"The ML team and its run history","measured":"Experiment tracking is configured (mlflow, tensorboard, wandb).","question":"Can the model that ships be tied to the run, data and code that produced it?"},{"id":"04.35","kind":"H+","where":"The ML team","measured":"No model card is in the tree.","question":"What is the model's intended use, what was it trained on, and where does it fail?"},{"id":"04.32","kind":"H","where":"The data room and the team's record of estimates","question":"Can this team deliver the stated roadmap on the stated timeline?"},{"id":"04.31","kind":"H","where":"Budget and roadmap decisions","question":"Does leadership know about the debt, and is time budgeted to repay it?"},{"id":"04.33","kind":"H","where":"Revenue, customer and churn data","question":"Is the engineering shape consistent with the commercial story?"}]},{"id":"05","band":"adequate","name":"Security & Reliability Posture","coverage":"partial","findings":[{"id":"05.6","band":"adequate","layer":"deterministic","title":"1 Dockerfile runs the application as root","signal":"container_runs_as_root","weight":"corroborating","evidence":[{"ref":"no-USER-instruction","kind":"path","path":"docker/Dockerfile","detail":"runs as root"}],"observed":{"rootful":1,"dockerfiles":1},"dimension":"05","rationale":"No USER instruction switches away from root, so the process runs with full privileges inside the container. It is a one-line fix and an ordinary expectation, which is why its absence is worth asking about: it usually says more about whether anyone has reviewed the deployment than about this container specifically."},{"id":"05.13","band":"adequate","layer":"deterministic","title":"5 outbound calls can wait forever","signal":"outbound_timeouts","weight":"corroborating","context":true,"evidence":[{"ref":"aim/cli/manager/manager.py","kind":"path","path":"aim/cli/manager/manager.py","detail":"outbound call without a timeout","line_end":43,"line_start":43},{"ref":"aim/ext/notifier/slack_notifier.py","kind":"path","path":"aim/ext/notifier/slack_notifier.py","detail":"outbound call without a timeout","line_end":18,"line_start":18},{"ref":"aim/ext/notifier/workplace_notifier.py","kind":"path","path":"aim/ext/notifier/workplace_notifier.py","detail":"outbound call without a timeout","line_end":20,"line_start":20}],"observed":{"calls_without_timeout":5},"dimension":"05","rationale":"5 HTTP calls use a client with no timeout (Python `requests` without `timeout=`, or Go's default client). When a dependency slows down, each one holds a worker until the connection gives up, and enough of them take the service down with the dependency.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."},{"id":"05.20","band":"adequate","layer":"deterministic","title":"1 SQL statement built from strings","signal":"sql_from_strings","weight":"corroborating","context":true,"evidence":[{"ref":"aim/storage/structured/sql_engine/utils.py","kind":"path","path":"aim/storage/structured/sql_engine/utils.py","detail":"SQL built from a string","line_end":49,"line_start":49}],"observed":{"files":1,"sites":1,"value_interpolated":0},"dimension":"05","rationale":"1 places in product code build SQL by formatting or joining strings rather than passing parameters. In each, what the code shows going in is a table or column name, a constant, or something the line does not show, not a request's value. Ask whether any value reaches these strings, rather than a parameter.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."},{"id":"05.21","band":"adequate","layer":"deterministic","title":"6 shell commands built from strings","signal":"shell_from_strings","weight":"corroborating","context":true,"evidence":[{"ref":"aim/web/ui/tasks/cli/commands/createComponent.js","kind":"path","path":"aim/web/ui/tasks/cli/commands/createComponent.js","detail":"command run through a shell","line_end":77,"line_start":77},{"ref":"setup.py","kind":"path","path":"setup.py","detail":"command run through a shell","line_end":115,"line_start":115},{"ref":"setup.py","kind":"path","path":"setup.py","detail":"command run through a shell","line_end":118,"line_start":118}],"observed":{"sites":6},"dimension":"05","rationale":"6 places run a command through a shell (`shell=True`, `os.system`, `exec` with a template) rather than passing arguments. Where any part comes from outside, it is command injection. Ask where each one's input comes from.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."},{"id":"05.48","band":"adequate","layer":"deterministic","title":"5 places insert HTML from a variable without sanitising it","signal":"unsafe_html","weight":"corroborating","context":true,"evidence":[{"ref":"aim/web/ui/src/modules/BaseExplorer/components/TextBox/TextBox.tsx","kind":"path","path":"aim/web/ui/src/modules/BaseExplorer/components/TextBox/TextBox.tsx","detail":"HTML from a variable","line_end":39,"line_start":39},{"ref":"aim/web/ui/src/pages/Board/components/dataVizElementsMap.tsx","kind":"path","path":"aim/web/ui/src/pages/Board/components/dataVizElementsMap.tsx","detail":"HTML from a variable","line_end":91,"line_start":91},{"ref":"aim/web/ui/src/pages/Dashboard/components/DashboardRight/ReleaseNotes/useReleaseNotes.ts","kind":"path","path":"aim/web/ui/src/pages/Dashboard/components/DashboardRight/ReleaseNotes/useReleaseNotes.ts","detail":"HTML from a variable","line_end":85,"line_start":85}],"observed":{"sites":5},"dimension":"05","rationale":"5 places set HTML from a value that is neither a literal nor passed through a sanitiser. Where the value can come from a user, that is stored cross-site scripting, and it is the first thing a buyer's security review looks for in a frontend.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."},{"id":"05.65","band":"adequate","layer":"deterministic","title":"6 advisories against this project in the last 24 months, 4 high or critical","signal":"advisory_record","weight":"corroborating","context":true,"evidence":[{"ref":"CVE-2026-85663","kind":"advisory","detail":"2026-09-04: CVE-2026-85663 (critical): Aim 3.29.1 remote tracking server fails to authenticate requests and dispatches arbitrary methods through getattr without allowlist validation. Unauthenticated "},{"ref":"CVE-2025-51463","kind":"advisory","detail":"2025-07-22: CVE-2025-51463 (high): Path Traversal in restore_run_backup() in AIM 3.28.0 allows remote attackers to write arbitrary files to the server's filesystem via a crafted backup tar file s"},{"ref":"CVE-2025-51464","kind":"advisory","detail":"2025-07-22: CVE-2025-51464 (high): Cross-site Scripting (XSS) in aimhubio Aim 3.28.0 allows remote attackers to execute arbitrary JavaScript in victims browsers via malicious Python code submitte"},{"ref":"CVE-2025-5321","kind":"advisory","detail":"2025-05-29: CVE-2025-5321 (moderate): A vulnerability classified as critical was found in aimhubio aim up to 3.29.1. This vulnerability affects the function RestrictedPythonQuery of the file /aim/st"},{"ref":"CVE-2024-8863","kind":"advisory","detail":"2024-09-14: CVE-2024-8863 (moderate): A vulnerability, which was classified as problematic, was found in aimhubio aim up to 3.24. Affected is the function dangerouslySetInnerHTML of the file textbox"}],"observed":{"newest":"2026-09-04","critical":2,"affecting":0,"could_not_tell":6,"last_24_months":6,"sources_failed":[],"known_exploited":0,"high_or_critical":4,"record_incomplete":["NVD: 38 records name aim with nothing tying them to this repository (CVE-2004-0279, CVE-2007-4901, CVE-2010-1374, …)"]},"dimension":"05","rationale":"The newest was published on 2026-09-04. A project that publishes advisories is telling its users about its fixes, and the count and pace say how much security work it carries. Whether 6 of them are fixed in the code you ship could not be told from this history: its version is only known to be at least 3.29.1. Answer lives in: the release you run, set against each fixed version. The record is incomplete: NVD: 38 records name aim with nothing tying them to this repository (CVE-2004-0279, CVE-2007-4901, CVE-2010-1374, …).","context_why":"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."}],"signals_run":34,"conclusive_signals":28,"what_a_person_adds":[{"id":"05.43","kind":"H+","where":"The security owner","measured":"No threat model is in the tree of what looks like a running service.","question":"Does one exist elsewhere, and who owns it?"},{"id":"05.41","kind":"H","where":"Ticketing and chat","question":"What has actually broken, how often, and how badly?"},{"id":"05.42","kind":"H","where":"Reports in the data room","question":"What did external testing find, and was it fixed?"},{"id":"05.44","kind":"H","where":"Audit reports; policy files in the tree are not evidence","question":"What is the SOC 2, ISO 27001 or GDPR status, and where is the evidence?"}]},{"id":"06","band":"adequate","name":"Observability & Operations","coverage":"partial","findings":[{"id":"06.2","band":"adequate","layer":"deterministic","title":"No structured logging library is in use","signal":"structured_logging","weight":"corroborating","evidence":[{"ref":"logging-scan","kind":"metric","detail":"searched 1,793 files for 10 structured logging libraries; 0 matched"}],"observed":{},"dimension":"06","rationale":"Nothing references a structured logging library. Logs that are written to be read by a person are not searchable by a machine, which means incident response here is proportional to how well someone remembers the codebase rather than to what the tooling can find."},{"id":"06.8","band":"adequate","layer":"deterministic","title":"One request cannot be followed through the logs","signal":"correlation_ids","weight":"corroborating","evidence":[{"ref":"request ids","kind":"metric","detail":"no request id, correlation id or tracing found"}],"observed":{"tracing":false,"request_id_sites":0},"dimension":"06","rationale":"Nothing in the service carries a request or correlation id, and there is no tracing. When a customer reports a failure, the log lines that belong to their request cannot be picked out from everyone else's."},{"id":"06.9","band":"adequate","layer":"deterministic","title":"No error reporter is wired in","signal":"error_reporting","weight":"corroborating","context":true,"evidence":[{"ref":"error reporting","kind":"metric","detail":"no error reporter initialised"}],"observed":{"installed":[],"initialised":0,"config_files":0},"dimension":"06","rationale":"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.","context_why":"A note that does not affect this rating: notes like it are common in well-run projects."}],"signals_run":16,"conclusive_signals":8,"what_a_person_adds":[{"id":"06.19","kind":"H+","where":"The operations team","measured":"Nothing in the tree backs up or restores data.","question":"How is data backed up, and has a restore ever been rehearsed?"},{"id":"06.10","kind":"H+","where":"The alerting tool and the on-call rota","measured":"No alert rule is defined in the repository.","question":"Where are alerts defined, who receives them, and when did one last fire?"},{"id":"06.29","kind":"H","where":"Pager history and dashboard logs","question":"Are the dashboards opened, the alerts acknowledged and the pages answered?"},{"id":"06.30","kind":"H","where":"Production metrics","question":"Are the service-level objectives actually met?"},{"id":"06.31","kind":"H","where":"Pager exports and interviews","question":"Who carries the pager, and how often does it go off?"},{"id":"06.32","kind":"H","where":"Cloud billing and capacity plans","question":"What does it cost to run, and how much headroom is there?"}]},{"id":"07","band":"not assessable","name":"Fit with the Acquirer","coverage":"none","findings":[],"signals_run":0,"conclusive_signals":0,"what_a_person_adds":[{"id":"07.1","kind":"H+","question":"This is primarily a TypeScript codebase, with Python alongside (17% of source files). 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