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lines. 2 files exceed 1,000 lines, the largest being 1,895. 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 281 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":"strong","name":"Engineering Process & SDLC Maturity","coverage":"high","findings":[],"signals_run":16,"conclusive_signals":15,"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? 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This is the single most expensive thing to discover after closing, and the repository cannot tell you whether that person is part of the transaction."},{"id":"03.5","band":"adequate","layer":"deterministic","title":"The contributor who wrote a quarter or more of this has not committed here for more than a year","signal":"contributor_attrition","weight":"corroborating","evidence":[{"ref":"last-commit-by-top-author","kind":"metric","detail":"last commit more than a year ago, measured to the survey"},{"ref":"git shortlog -sn","kind":"metric","detail":"top author a quarter or more of 325 commits"}],"observed":{"authors":43,"top_share":"a quarter or more","top_contributor_last_committed":"more than a year ago"},"dimension":"03","rationale":"One person authored a quarter or more of 325 commits and has not committed here for more than a year, 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."},{"id":"03.27","band":"adequate","layer":"deterministic","title":"Regular contributors fell from 7 to 1 in a year","signal":"joiners_and_leavers","weight":"corroborating","evidence":[{"ref":"regular contributors by year","kind":"metric","detail":"7 then 1; 5 stopped committing, 0 began"}],"observed":{"left":5,"joined":0,"regular_last_year":1,"regular_prior_year":7},"dimension":"03","rationale":"5 people who committed regularly the year before made no commits in the last year, and 0 new regular contributors arrived. 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A fix without the test that would have caught the bug can quietly come back, and the suite never learns from what went wrong."}],"signals_run":19,"conclusive_signals":13,"what_a_person_adds":[{"id":"04.11","kind":"H+","where":"The team","measured":"9 commits landed in the last year, against 157 the year before (-94%).","question":"Is that maintenance mode, a pivot, or fewer people working on it? 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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":"05.27","band":"adequate","layer":"deterministic","title":"The build runs third-party code it does not pin","signal":"supply_chain_pinning","weight":"corroborating","context":true,"evidence":[{"ref":".github/workflows/auto-bump-and-release.yaml","kind":"path","path":".github/workflows/auto-bump-and-release.yaml","detail":"action pinned by tag","line_end":18,"line_start":18},{"ref":".github/workflows/auto-bump-and-release.yaml","kind":"path","path":".github/workflows/auto-bump-and-release.yaml","detail":"action pinned by tag","line_end":46,"line_start":46},{"ref":"Dockerfile","kind":"path","path":"Dockerfile","detail":"download piped into a shell","line_end":119,"line_start":119}],"observed":{"action_refs":26,"pipe_to_shell":1,"unpinned_third_party":14},"dimension":"05","rationale":"14 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; 1 step pipes a download straight into a shell. Tags have been moved to malicious commits in real supply-chain attacks, and a piped script is whatever the server returns that minute. 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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":"05.22","band":"adequate","layer":"deterministic","title":"4 deserialisers that can run code","signal":"unsafe_deserialization","weight":"corroborating","context":true,"evidence":[{"ref":"libs/kotaemon/kotaemon/contribs/promptui/export.py","kind":"path","path":"libs/kotaemon/kotaemon/contribs/promptui/export.py","detail":"code-executing deserialiser","line_end":46,"line_start":46},{"ref":"libs/kotaemon/kotaemon/contribs/promptui/export.py","kind":"path","path":"libs/kotaemon/kotaemon/contribs/promptui/export.py","detail":"code-executing deserialiser","line_end":56,"line_start":56},{"ref":"libs/kotaemon/kotaemon/contribs/promptui/ui/chat.py","kind":"path","path":"libs/kotaemon/kotaemon/contribs/promptui/ui/chat.py","detail":"code-executing deserialiser","line_end":272,"line_start":272}],"observed":{"sites":4},"dimension":"05","rationale":"4 places read data with a deserialiser that executes what it reads (pickle). That is safe on data the system wrote itself and remote code execution on anything else. 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":"05.65","band":"adequate","layer":"deterministic","title":"6 advisories against this project in the last 24 months, 3 high or critical","signal":"advisory_record","weight":"corroborating","evidence":[{"ref":"CVE-2026-82281","kind":"advisory","detail":"2026-08-28: CVE-2026-82281 (critical): Kotaemon Missing Ownership Check in Conversation Functions"},{"ref":"CVE-2026-69098","kind":"advisory","detail":"2026-08-04: CVE-2026-69098 (critical): kotaemon 0.12.0 Unauthenticated Remote Code Execution via Insecure Deserialization"},{"ref":"CVE-2025-63914","kind":"advisory","detail":"2025-11-24: CVE-2025-63914 (moderate): An issue was discovered in Cinnamon kotaemon 0.11.0. The _may_extract_zip function in the \\libs\\ktem\\ktem\\index\\file\\ui.py file does not check the contents of u"},{"ref":"CVE-2025-56526","kind":"advisory","detail":"2025-11-18: CVE-2025-56526 (moderate): Cross site scripting (XSS) vulnerability in Kotaemon 0.11.0 allowing attackers to execute arbitrary code via a crafted PDF."},{"ref":"CVE-2025-56527","kind":"advisory","detail":"2025-11-18: CVE-2025-56527 (high): Plaintext password storage in Kotaemon 0.11.0 in the client's localStorage."}],"observed":{"newest":"2026-08-28","critical":2,"affecting":2,"could_not_tell":1,"last_24_months":6,"sources_failed":[],"known_exploited":0,"high_or_critical":3,"record_incomplete":["NVD: 1 record names kotaemon with nothing tying it to this repository (CVE-2026-86867)"]},"dimension":"05","rationale":"The newest was published on 2026-08-28. A project that publishes advisories is telling its users about its fixes, and the count and pace say how much security work it carries. The record is incomplete: NVD: 1 record names kotaemon with nothing tying it to this repository (CVE-2026-86867)."}],"signals_run":34,"conclusive_signals":25,"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 357 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":9,"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 Python codebase. Does your engineering organisation already run Python in production, or would this be the first?"},{"id":"07.10","kind":"H+","question":"The bulk of this system sits in libs/, templates/. Which of your existing systems would each of those have to absorb or replace?"},{"id":"07.2","kind":"H+","question":"The repository carries deployment configuration (Dockerfile and 1 more). Does that match your deployment and on-call model, or does it need rehosting first?"},{"id":null,"kind":"H+","question":"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?"},{"id":"07.11","kind":"H","where":"Your architecture","question":"Which of these systems duplicate yours, and which get retired?"},{"id":"07.12","kind":"H","where":"The engagement","question":"What will integration cost, and in what order?"},{"id":"07.13","kind":"H","where":"Your org design","question":"Where does the team land in your organisation, and who reports to whom?"},{"id":"07.14","kind":"H","where":"Deal terms","question":"Are there earn-outs, retention packages or contractor IP to assign?"},{"id":"07.15","kind":"H","where":"Customer contracts","question":"Do customer contracts limit hosting, regions or vendors?"}],"not_assessable_reason":"structurally not assessable from a 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