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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."},{"id":"01.25","band":"adequate","layer":"deterministic","title":"2 base images float: no version, or `latest`","signal":"build_reproducibility","weight":"corroborating","evidence":[{"ref":"src/frontend/Dockerfile","kind":"path","path":"src/frontend/Dockerfile","detail":"base image without a version","line_end":10,"line_start":10},{"ref":"src/frontend/platform/Dockerfile","kind":"path","path":"src/frontend/platform/Dockerfile","detail":"base image without a version","line_end":10,"line_start":10}],"observed":{"floating":2,"from_lines":5},"dimension":"01","rationale":"2 of 5 `FROM` lines in product Dockerfiles name an image without a version, or with `latest`. 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Each one is a maintenance obligation, a supply-chain surface and a potential licence question that transfers with the asset. The count says nothing about whether any given dependency was a good choice; it says how many such choices a buyer inherits."},{"id":"04.17","band":"adequate","layer":"deterministic","title":"Node.js 20 is past end of life","signal":"eol_runtime","weight":"corroborating","context":true,"evidence":[{"ref":"src/frontend/Dockerfile","kind":"path","path":"src/frontend/Dockerfile","detail":"Node.js 20, end of life 2026-04-30"}],"observed":{"pinned":["node 20"],"eol_as_of":"2026-09-24"},"dimension":"04","rationale":"The code is pinned to Node.js 20 (end of life 2026-04-30). None of these receives security fixes any more; the first stopped on 2026-04-30. 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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/base_ci.yml","kind":"path","path":".github/workflows/base_ci.yml","detail":"action pinned by tag","line_end":34,"line_start":34},{"ref":".github/workflows/base_ci.yml","kind":"path","path":".github/workflows/base_ci.yml","detail":"action pinned by tag","line_end":43,"line_start":43}],"observed":{"action_refs":41,"pipe_to_shell":0,"unpinned_third_party":7},"dimension":"05","rationale":"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. 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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":"05.17","band":"adequate","layer":"deterministic","title":"18 of 94 migrations cannot be rolled back","signal":"migration_reversibility","weight":"corroborating","evidence":[{"ref":"src/backend/bisheng/core/database/alembic/versions/v2_5_0_f011_backfill_create_knowledge_web_menu.py","kind":"path","path":"src/backend/bisheng/core/database/alembic/versions/v2_5_0_f011_backfill_create_knowledge_web_menu.py","detail":"migration with no way back","line_end":66,"line_start":66},{"ref":"src/backend/bisheng/core/database/alembic/versions/v2_5_1_f012_merge_heads.py","kind":"path","path":"src/backend/bisheng/core/database/alembic/versions/v2_5_1_f012_merge_heads.py","detail":"migration with no way back","line_end":54,"line_start":54},{"ref":"src/backend/bisheng/core/database/alembic/versions/v2_5_1_f025_merge_f024_heads.py","kind":"path","path":"src/backend/bisheng/core/database/alembic/versions/v2_5_1_f025_merge_f024_heads.py","detail":"migration with no way back","line_end":39,"line_start":39}],"observed":{"share":0.191,"migrations":94,"irreversible":18},"dimension":"05","rationale":"18 schema migrations (19%) have no working way back: an empty `downgrade`, a `down` that does nothing, or a data migration with no reverse. A bad deploy that includes one is recovered from a backup, not reverted. Ask when a restore was last rehearsed."},{"id":"05.20","band":"adequate","layer":"deterministic","title":"4 SQL statements built from strings","signal":"sql_from_strings","weight":"corroborating","context":true,"evidence":[{"ref":"src/backend/bisheng/role/domain/services/role_service.py","kind":"path","path":"src/backend/bisheng/role/domain/services/role_service.py","detail":"SQL built from a string","line_end":893,"line_start":893},{"ref":"src/backend/bisheng/database/models/tenant.py","kind":"path","path":"src/backend/bisheng/database/models/tenant.py","detail":"SQL built from a string","line_end":519,"line_start":519},{"ref":"src/backend/bisheng/database/models/tenant.py","kind":"path","path":"src/backend/bisheng/database/models/tenant.py","detail":"SQL built from a string","line_end":537,"line_start":537}],"observed":{"files":3,"sites":4,"value_interpolated":1},"dimension":"05","rationale":"4 places in product code build SQL by formatting or joining strings rather than passing parameters. 1 of them put a value into the string; in the rest, what the code shows going in is a table or column name, a constant, or something the line does not show. 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":"05.22","band":"adequate","layer":"deterministic","title":"7 deserialisers that can run code","signal":"unsafe_deserialization","weight":"corroborating","context":true,"evidence":[{"ref":"src/backend/bisheng/common/utils/markdown_cmpnt/md_to_docx/utils/yaml_utils.py","kind":"path","path":"src/backend/bisheng/common/utils/markdown_cmpnt/md_to_docx/utils/yaml_utils.py","detail":"code-executing deserialiser","line_end":7,"line_start":7},{"ref":"src/backend/bisheng/core/cache/redis_conn.py","kind":"path","path":"src/backend/bisheng/core/cache/redis_conn.py","detail":"code-executing deserialiser","line_end":182,"line_start":182},{"ref":"src/backend/bisheng/core/cache/redis_conn.py","kind":"path","path":"src/backend/bisheng/core/cache/redis_conn.py","detail":"code-executing deserialiser","line_end":192,"line_start":192}],"observed":{"sites":7},"dimension":"05","rationale":"7 places read data with a deserialiser that executes what it reads (`yaml.load` without a safe loader, 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":"05.26","band":"adequate","layer":"deterministic","title":"53 locked dependencies have published vulnerabilities, 60 high or critical in what ships","signal":"known_vulnerabilities","weight":"corroborating","evidence":[{"ref":"src/backend/uv.lock","kind":"path","path":"src/backend/uv.lock","detail":"anyio 4.11.0: GHSA-82r6-8w77-94w6 (critical), fixed in 4.14.2"},{"ref":"src/backend/uv.lock","kind":"path","path":"src/backend/uv.lock","detail":"certifi 2025.10.5: GHSA-6q48-6c7w-9gw2 (critical), fixed in 2026.10.19"},{"ref":"src/backend/uv.lock","kind":"path","path":"src/backend/uv.lock","detail":"chromadb 1.3.4: GHSA-36p7-vc44-83pf (critical)"}],"observed":{"advisories":135,"dependencies":2323,"high_or_critical":72,"pinned_to_a_commit":0,"ecosystems_not_read":[],"vulnerable_packages":53,"set_aside_not_imported":0,"high_or_critical_shipping":60,"high_or_critical_not_shipped":{"dev":12}},"unproven":true,"dimension":"05","rationale":"53 of 2,323 locked dependencies match 135 published advisories in OSV, 72 of them rated high or critical. 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."},{"id":"05.48","band":"adequate","layer":"deterministic","title":"20 places insert HTML from a variable without sanitising it","signal":"unsafe_html","weight":"corroborating","context":true,"evidence":[{"ref":"src/frontend/client/src/components/Artifacts/Mermaid.tsx","kind":"path","path":"src/frontend/client/src/components/Artifacts/Mermaid.tsx","detail":"HTML from a variable","line_end":60,"line_start":60},{"ref":"src/frontend/client/src/components/Banners/Banner.tsx","kind":"path","path":"src/frontend/client/src/components/Banners/Banner.tsx","detail":"HTML from a variable","line_end":38,"line_start":38},{"ref":"src/frontend/client/src/components/Chat/Messages/Content/Mermaid.tsx","kind":"path","path":"src/frontend/client/src/components/Chat/Messages/Content/Mermaid.tsx","detail":"HTML from a variable","line_end":81,"line_start":81}],"observed":{"sites":20},"dimension":"05","rationale":"20 places set HTML from a value that is neither a literal nor passed through a sanitiser. 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