fix(validation): harden judge category controls - #913
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📝 WalkthroughWalkthrough
ChangesJudge category control safety
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🔵 Low · up to The validation hardening is mergeable with explicit follow-up to correct the standards verification date and rename shadowing test parameters so documentation and lint requirements remain clean. Sequence Diagram(s)sequenceDiagram
participant Caller
participant validate_judge
participant Rust_core
Caller->>validate_judge: provide k
validate_judge->>validate_judge: validate and normalize k
validate_judge->>Rust_core: validate_scoring(category_count)
Rust_core-->>validate_judge: validation result
validate_judge-->>Caller: return result
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Inline comments:
In `@docs/doctoring/judge_category_control_safety.md`:
- Line 27: Recheck the cited OWASP and NIST sources and update the verification
date in the standards-status paragraph to the actual completed date, ensuring it
is not later than August 15, 2026.
In `@tests/test_validation_category_control_safety.py`:
- Around line 126-131: Rename the guarded_import parameters globals and locals
to non-shadowing names, and pass those renamed arguments unchanged when
forwarding to real_import; preserve the existing import-validation behavior.
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📒 Files selected for processing (4)
docs/changelog.d/912-judge-category-control-safety.mddocs/doctoring/judge_category_control_safety.mdpython/fast_mlsirm/validation.pytests/test_validation_category_control_safety.py
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Reviewed d34d2a224e3291cf4199a8e65d542e47f7c5ae2b against #912. Production validate_judge(..., k=...) meets the marshalling contract; the RED suite does not fully prove the named threat list. Verdict: COMMENT. Not APPROVE: evidence is not independently clean. No production must-fix, so not REQUEST_CHANGES.
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| @pytest.mark.parametrize( | ||
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| [_HostileInt, _HostileNumpyInt, _IntegerProtocolProvider], |
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Important / should-fix (not a production hole): this parametrize does not match #912 items 2 and 5 or the repo integer-safety RED contract in tests/test_scoring_execution_integer_callback_safety.py.
Missing cases that production already rejects with zero callbacks (probed on this head): True / False / np.bool_; an __index__-only provider; a 0-d np.ndarray (int(np.array(2)) still works in Python); and repr/eq/hash/lt/gt hooks on the hostile objects. _IntegerProtocolProvider only implements __int__.
Hostile tests also only assert rust_calls == []. They stay green if from . import _core moves back above the type check. Extend test_validate_judge_rejects_invalid_k_before_core_import to type-invalid k, and patch sys.modules['fast_mlsirm._core'] as well as fast_mlsirm._core so the NumPy dispatch assertion remains meaningful after other tests have imported the extension.
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Review of #913 @ d34d2a22
Production validate_judge(..., k=...) meets #912. Category-count admission is identity-only (type(value) is int or an exact concrete NumPy integer scalar), the 2..=1000 domain is unchanged, labels/policy marshal next, and from . import _core happens only after that. Booleans, subclasses, 0-d arrays, and arbitrary __int__/__index__ providers raise before conversion or native discovery. Prior CodeRabbit threads (standards date; globals/locals shadowing) are already resolved on this head.
The new RED file does not yet prove the full named threat list: no __index__-only provider, no boolean/np.bool_/0-d array cases, no type-invalid import-order probe, and hostile tests only assert a package-attribute fake. That is a test-contract gap, not a production hole.
Next action: land #935 (582e4187) instead of merging this head in parallel. #935 keeps this production boundary and adds the missing RED cases (20 passed locally). Do not treat this automation comment as independent review or as merge authority. Required checks on this synchronize are still running; refetch exact-head evidence before any integration decision.
Same-file residual, out of #912 scope: fleiss_kappa(..., k=...) still does from . import _core then isinstance + int(k). Keep that as a dedicated follow-up after #935.
Sent by Cursor Automation: Fix Issues
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| @pytest.mark.parametrize( | ||
| "control_type", | ||
| [_HostileInt, _HostileNumpyInt, _IntegerProtocolProvider], |
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This parametrize covers __int__ subclasses and one protocol object, but #912 also names __index__-only providers, booleans/np.bool_, and 0-d arrays. The import-guard test below only uses in-type k=1, so a later from . import _core move would still leave these hostile cases green.
#935 adds those RED cases and pins the fake through sys.modules['fast_mlsirm._core']. Take that head rather than expanding this file in place if #935 is still open.
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Summary
validate_judge(..., k=...)category counts before compiled-core discovery2..=1000category domain and all Rust-owned agreement/fairness arithmetic, governed thresholds, and result schemasTest-first lineage
7cf9eb6c2937020b5e755b5ae0a6cc2380fc068dspecifies the hostile conversion/native-discovery RED contractdb0cb5848d317d39f197933043e289e00cdf522bimplements trusted scalar admission and moves Rust discovery after public validation/marshalling7b6c93c56a0c30a63c52f22fe8b514615680fab1records bounded release evidence0ebcc06a619e8eb9a84b2b92d1b40898087fdcaarecords initial doctoring and standards traceability3979f064b3e32fe44892cab369f8ffc1e3af4d73adds a second RED proving hashed type-container membership can dispatch caller-controlled scalar metaclass hooks54fe33b2dd9d2a287c04635f2acba7bfc94f10fareplaces that admission with identity-only type comparisonsee16ffa047aa5c24ff7011407a848cd57af59369aligns canonical doctoring with the second RED/GREEN boundaryScope
Python validation/marshalling, tests, changelog, and doctoring only. No psychometric/fairness formula, threshold policy, Rust kernel, dependency, provider, persistence, workflow, gate, result-schema, or downstream-ownership change.
Lifecycle discipline
Keep this PR Draft until the then-live exact-head CI, security, package/provenance, coverage/OpenCode and formal review evidence is terminal and current. Any source-head or protected-base movement makes predecessor evidence historical and requires a fresh decision-time sweep. Protected integration also remains subject to the live independent-review and thread-resolution rules; no author or automated review substitutes for them.
Standards trace
CWE-1287; OWASP ASVS 5.0.0 (latest stable as rechecked 2026-08-16); NIST SP 800-218 SSDF 1.1 as the final baseline, with Rev. 1 / SSDF 1.2 recorded only as an Initial Public Draft standards-watch item.
Closes #912.
Summary by CodeRabbit
Security Enhancements
validate_judge.Bug Fixes