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declares 132 direct dependencies. 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":"04.5","band":"adequate","layer":"deterministic","title":"Effort is shifting from building to rewriting","signal":"churn_trend","weight":"corroborating","context":true,"evidence":[{"ref":"deletions-per-insertion","kind":"metric","detail":"first half 0.80, second half 1.19 (split 2024-07-01)"}],"observed":{"history_read":"the most recent 50,000 commits (10 Mar 2022 to 22 Oct 2026)"},"dimension":"04","rationale":"Deleted lines per line added rose from 0.80 to 1.19 between the first and second halves of this history. Rework is normal and often healthy, but a rising ratio means an increasing share of the team's time is spent replacing code that already exists rather than building what does not. Whether that is deliberate repayment or churn is a question for the team. This was read from the most recent 50,000 commits (10 Mar 2022 to 22 Oct 2026) only; older history was not read.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."},{"id":"04.17","band":"adequate","layer":"deterministic","title":"Python 3.9 is past end of life","signal":"eol_runtime","weight":"corroborating","context":true,"evidence":[{"ref":"airbyte-integrations/connectors/source-python-http-tutorial/Dockerfile","kind":"path","path":"airbyte-integrations/connectors/source-python-http-tutorial/Dockerfile","detail":"Python 3.9, end of life 2025-10-31"}],"observed":{"pinned":["python 3.11","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":"04.28","band":"adequate","layer":"deterministic","title":"11% of the code is legacy or compatibility code, the oldest 38 months old","signal":"compat_layers","weight":"corroborating","evidence":[{"ref":"airbyte-cdk/bulk/toolkits/legacy-source-integration-tests/src/testFixtures/resources/image_exists.sh","kind":"path","path":"airbyte-cdk/bulk/toolkits/legacy-source-integration-tests/src/testFixtures/resources/image_exists.sh","detail":"legacy or compatibility code"},{"ref":"airbyte-cdk/bulk/toolkits/legacy-task-load-avro/src/main/kotlin/io/airbyte/cdk/load/command/avro/AvroFormatCompressionCodecSpecification.kt","kind":"path","path":"airbyte-cdk/bulk/toolkits/legacy-task-load-avro/src/main/kotlin/io/airbyte/cdk/load/command/avro/AvroFormatCompressionCodecSpecification.kt","detail":"legacy or compatibility code"},{"ref":"airbyte-cdk/bulk/toolkits/legacy-task-load-avro/src/main/kotlin/io/airbyte/cdk/load/data/avro/AirbyteTypeToAvroSchema.kt","kind":"path","path":"airbyte-cdk/bulk/toolkits/legacy-task-load-avro/src/main/kotlin/io/airbyte/cdk/load/data/avro/AirbyteTypeToAvroSchema.kt","detail":"legacy or compatibility code"}],"observed":{"share":0.115,"code_files":2506,"compat_files":288,"oldest_months":38},"dimension":"04","rationale":"288 of 2506 source files sit in paths named legacy, compat, shim, polyfill or deprecated, and some have been there 38 months. That is usually a migration that never finished. Ask whether finishing it is planned, and what keeping both costs."},{"id":"04.38","band":"adequate","layer":"deterministic","title":"6 files still carry code deprecated more than two years ago","signal":"deprecations_lingering","weight":"corroborating","context":true,"evidence":[{"ref":"airbyte-cdk/java/airbyte-cdk/s3-destinations/src/main/kotlin/io/airbyte/cdk/integrations/destination/s3/parquet/ParquetSerializedBuffer.kt","kind":"path","path":"airbyte-cdk/java/airbyte-cdk/s3-destinations/src/main/kotlin/io/airbyte/cdk/integrations/destination/s3/parquet/ParquetSerializedBuffer.kt","detail":"deprecated since Mar 2024"},{"ref":"airbyte-cdk/java/airbyte-cdk/core/src/main/kotlin/io/airbyte/cdk/integrations/destination/record_buffer/SerializableBuffer.kt","kind":"path","path":"airbyte-cdk/java/airbyte-cdk/core/src/main/kotlin/io/airbyte/cdk/integrations/destination/record_buffer/SerializableBuffer.kt","detail":"deprecated since Mar 2024"},{"ref":"airbyte-cdk/java/airbyte-cdk/db-sources/src/main/kotlin/io/airbyte/cdk/integrations/source/relationaldb/state/LegacyStateManager.kt","kind":"path","path":"airbyte-cdk/java/airbyte-cdk/db-sources/src/main/kotlin/io/airbyte/cdk/integrations/source/relationaldb/state/LegacyStateManager.kt","detail":"deprecated since Mar 2024"},{"ref":"airbyte-cdk/java/airbyte-cdk/db-destinations/src/main/kotlin/io/airbyte/cdk/integrations/destination/jdbc/AbstractJdbcDestination.kt","kind":"path","path":"airbyte-cdk/java/airbyte-cdk/db-destinations/src/main/kotlin/io/airbyte/cdk/integrations/destination/jdbc/AbstractJdbcDestination.kt","detail":"deprecated since Mar 2024"},{"ref":"airbyte-integrations/connectors/destination-oracle/src/main/java/io/airbyte/integrations/destination/oracle/OracleNameTransformer.java","kind":"path","path":"airbyte-integrations/connectors/destination-oracle/src/main/java/io/airbyte/integrations/destination/oracle/OracleNameTransformer.java","detail":"deprecated since Apr 2024"}],"observed":{"older_than_two_years":6,"files_with_deprecations":83},"dimension":"04","rationale":"6 files were marked deprecated over two years ago and still are, the oldest since Mar 2024. A deprecation is a promise to remove. Ask what still depends on these, and whether removing them is scheduled.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."},{"id":"04.61","band":"adequate","layer":"deterministic","title":"No release for 12 months while development continues","signal":"releases_stopped","weight":"corroborating","evidence":[{"ref":"8b40981ae","kind":"commit","detail":"last tag v2.0.0"}],"observed":{"median_gap_days":34.0,"days_since_last_tag":371,"commits_last_90_days":5365},"dimension":"04","rationale":"The last tag, v2.0.0, was cut 371 days before the survey; the typical gap between releases was 34 days, and 5365 commits landed in the last 90 days. Users run the last release, not this code."}],"signals_run":19,"conclusive_signals":16,"what_a_person_adds":[{"id":"04.11","kind":"H+","where":"The team","measured":"1,705 commits landed in the last year, against 16,249 the year before (-90%).","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":"No experiment tracking is configured in the repository.","question":"How was the shipped model trained and evaluated, and could it be reproduced?"},{"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":"7 Dockerfiles run the application as root","signal":"container_runs_as_root","weight":"corroborating","evidence":[{"ref":"no-USER-instruction","kind":"path","path":"airbyte-cdk/bulk/core/base/src/testFixtures/resources/bastion/Dockerfile","detail":"runs as root"},{"ref":"no-USER-instruction","kind":"path","path":"airbyte-cdk/java/airbyte-cdk/core/src/main/resources/bastion/Dockerfile","detail":"runs as root"},{"ref":"no-USER-instruction","kind":"path","path":"airbyte-integrations/bases/base-java/Dockerfile","detail":"runs as root"},{"ref":"no-USER-instruction","kind":"path","path":"airbyte-integrations/bases/base-normalization/Dockerfile","detail":"runs as root"}],"observed":{"rootful":7,"dockerfiles":7},"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":"05.27","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/ai-breaking-change-review-command.yml","kind":"path","path":".github/workflows/ai-breaking-change-review-command.yml","detail":"action pinned by tag","line_end":90,"line_start":90},{"ref":".github/workflows/ai-canary-prerelease-command.yml","kind":"path","path":".github/workflows/ai-canary-prerelease-command.yml","detail":"action pinned by tag","line_end":51,"line_start":51}],"observed":{"action_refs":479,"pipe_to_shell":0,"unpinned_third_party":5},"dimension":"05","rationale":"5 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.","context_why":"A note that does not affect this rating: notes like it are common in well-run projects."},{"id":"05.13","band":"adequate","layer":"deterministic","title":"48 outbound calls can wait forever","signal":"outbound_timeouts","weight":"corroborating","context":true,"evidence":[{"ref":"airbyte-ci/connectors/ci_credentials/ci_credentials/google_api.py","kind":"path","path":"airbyte-ci/connectors/ci_credentials/ci_credentials/google_api.py","detail":"outbound call without a timeout","line_end":35,"line_start":35},{"ref":"airbyte-ci/connectors/ci_credentials/ci_credentials/google_api.py","kind":"path","path":"airbyte-ci/connectors/ci_credentials/ci_credentials/google_api.py","detail":"outbound call without a timeout","line_end":45,"line_start":45},{"ref":"airbyte-ci/connectors/ci_credentials/ci_credentials/google_api.py","kind":"path","path":"airbyte-ci/connectors/ci_credentials/ci_credentials/google_api.py","detail":"outbound call without a timeout","line_end":83,"line_start":83}],"observed":{"calls_without_timeout":48},"dimension":"05","rationale":"48 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":"2 SQL statements built from strings","signal":"sql_from_strings","weight":"corroborating","context":true,"evidence":[{"ref":"airbyte-integrations/connectors/destination-databend/destination_databend/writer.py","kind":"path","path":"airbyte-integrations/connectors/destination-databend/destination_databend/writer.py","detail":"SQL built from a string","line_end":117,"line_start":117},{"ref":"airbyte-integrations/connectors/destination-firebolt/destination_firebolt/writer.py","kind":"path","path":"airbyte-integrations/connectors/destination-firebolt/destination_firebolt/writer.py","detail":"SQL built from a string","line_end":211,"line_start":211}],"observed":{"files":2,"sites":2,"value_interpolated":0},"dimension":"05","rationale":"2 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":"05.22","band":"adequate","layer":"deterministic","title":"3 deserialisers that can run code","signal":"unsafe_deserialization","weight":"corroborating","context":true,"evidence":[{"ref":"airbyte-integrations/bases/base-normalization/normalization/transform_catalog/transform.py","kind":"path","path":"airbyte-integrations/bases/base-normalization/normalization/transform_catalog/transform.py","detail":"code-executing deserialiser","line_end":76,"line_start":76},{"ref":"airbyte-integrations/bases/base-normalization/normalization/transform_config/transform.py","kind":"path","path":"airbyte-integrations/bases/base-normalization/normalization/transform_config/transform.py","detail":"code-executing deserialiser","line_end":50,"line_start":50},{"ref":"airbyte-integrations/connectors/source-s3/source_s3/utils.py","kind":"path","path":"airbyte-integrations/connectors/source-s3/source_s3/utils.py","detail":"code-executing deserialiser","line_end":54,"line_start":54}],"observed":{"sites":3},"dimension":"05","rationale":"3 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":"117 locked dependencies have published vulnerabilities, 86 high or critical in what ships","signal":"known_vulnerabilities","weight":"corroborating","evidence":[{"ref":"airbyte-integrations/connectors/source-sftp-bulk/poetry.lock","kind":"path","path":"airbyte-integrations/connectors/source-sftp-bulk/poetry.lock","detail":"pillow 12.0.0: GHSA-332p-7hrc-92wf (critical), fixed in 13.0.0"},{"ref":"airbyte-integrations/connectors/source-gcs/poetry.lock","kind":"path","path":"airbyte-integrations/connectors/source-gcs/poetry.lock","detail":"pillow 12.3.0: GHSA-332p-7hrc-92wf (critical), fixed in 13.0.0"},{"ref":"airbyte-integrations/connectors/source-azure-blob-storage/poetry.lock","kind":"path","path":"airbyte-integrations/connectors/source-azure-blob-storage/poetry.lock","detail":"unstructured 0.10.27: GHSA-4mvj-m6j5-pmf7 (critical), fixed in 0.24.0"}],"observed":{"advisories":249,"dependencies":2984,"high_or_critical":122,"pinned_to_a_commit":0,"ecosystems_not_read":["Gradle"],"vulnerable_packages":117,"set_aside_not_imported":0,"high_or_critical_shipping":86},"unproven":true,"dimension":"05","rationale":"117 of 2,984 locked dependencies match 249 published advisories in OSV, 122 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. This lockfile pins development tools alongside what ships and does not say which is which, so some of these may never reach a user."},{"id":"05.66","band":"adequate","layer":"deterministic","title":"The licence is Elastic-2.0: source available, not open source","signal":"license_grant_unclear","weight":"corroborating","context":true,"evidence":[{"ref":"LICENSE","kind":"path","path":"LICENSE","detail":"44 lines, Elastic-2.0","line_end":3,"line_start":1}],"observed":{"path":"LICENSE","named":true,"identified":"Elastic-2.0","source_available":true},"dimension":"05","rationale":"LICENSE grants Elastic-2.0: source available, not open source; offering it as a managed service is not allowed. The reading comes from the licence's own title and clauses. Whether the terms fit the buyer's intended use, and whether any paid licence transfers with the code, is a question for counsel and the licensor.","context_why":"A note that does not affect this rating: it names the project's licence, a fact for the first screen rather than a weakness."},{"id":"05.60","band":"adequate","layer":"deterministic","title":"Relicensed: MIT → Elastic-2.0 (2021-09-27)","signal":"licence_changes","weight":"corroborating","context":true,"evidence":[{"ref":"87e9c99ae","kind":"commit","path":"LICENSE.md","detail":"MIT from 2020-08-17"},{"ref":"f25542a14","kind":"commit","path":"LICENSE","detail":"Elastic-2.0 from 2021-09-27"}],"observed":{"since":"2021-09-27","latest":"Elastic-2.0","weaker":true,"narrowed_at":"2021-09-27","narrowed_days":1851,"licence_versions":2,"source_available":true,"narrowed_recently":false,"unreleased_changes":0},"dimension":"05","rationale":"The root licence changed 1 time(s). The latest terms restrict what users, hosts or a buyer may do in ways the earlier ones did not. Code taken under the old terms stays under them, so both matter in diligence.","context_why":"A note that does not affect this rating: a licence change is a fact for the first screen, and only a narrowing of rights within two years of the surveyed commit costs \"strong\"."},{"id":"05.65","band":"adequate","layer":"deterministic","title":"2 advisories against this project in the last 24 months, 2 high or critical","signal":"advisory_record","weight":"corroborating","context":true,"evidence":[{"ref":"GHSA-g35w-6r6v-h4r7","kind":"advisory","detail":"2026-10-17: GHSA-g35w-6r6v-h4r7 (critical), fixed in 2.2.0: Remote code execution via Connector Builder custom components when unsafe code is disabled"},{"ref":"CVE-2026-80049","kind":"advisory","detail":"2026-08-25: CVE-2026-80049 (high): Airbyte Platform resolves the workspace used for its authorization decision from a field the caller supplies. AuthorizationServerHandler copies recognised ident"}],"observed":{"newest":"2026-10-17","critical":1,"affecting":0,"could_not_tell":2,"last_24_months":2,"sources_failed":["OSV PyPI airbyte-destination-pgvector (an empty record for a package published here)"],"known_exploited":0,"high_or_critical":2,"record_incomplete":["NVD: 2 records name airbyte with nothing tying them to this repository (CVE-2026-92203, CVE-2026-92204)"]},"dimension":"05","rationale":"The newest was published on 2026-10-17. 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 2 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 2.0.0. Answer lives in: the release you run, set against each fixed version. 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--deep","commit_share_by_year":{"2022":0.0,"2023":0.0,"2024":0.0,"2025":0.0201,"2026":0.1798},"declared_agent_names":["Claude","Claude Fable 5","Claude Fable 5.1","Claude Opus 4.5","Claude Opus 4.6","Claude Opus 4.6 (1M context)","Claude Opus 4.7","Claude Opus 4.7 (1M context)","Claude Opus 4.8","Claude Opus 4.8 (1M context)","Claude Opus 5","Claude Opus 5 (1M context)","Claude Opus 5.5","Claude Opus 5.5 (1M context)","Claude Sonnet 4.5","Claude Sonnet 4.6","Claude Sonnet 5","Codex","Copilot","Copilot Autofix powered by AI","Cursor","Devin AI","copilot-swe-agent[bot]","devin-ai-integration[bot]"],"declared_lines_added":1197877,"surviving_line_share":null,"floor_not_measurement":"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.","surviving_total_lines":null},"reliance":"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).","published_under_todays_rules":["4 findings from checks Borehole's calibration found wrong more often than right are no longer published."]}