fix(hookify): fail closed on exceptions in pretooluse hook - #84364
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alifakbxr wants to merge 1 commit into
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fix(hookify): fail closed on exceptions in pretooluse hook#84364alifakbxr wants to merge 1 commit into
alifakbxr wants to merge 1 commit into
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This fixes a vulnerability where an exception (such as an ImportError or a generic exception during rule evaluation) would cause the hook to exit with status 0 and allow the gated tool execution. Now, exceptions will emit a permissionDecision: 'deny', ensuring unauthorized actions are prevented when the hook fails. Resolves anthropics#84302
This was referenced Aug 6, 2026
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This fixes a vulnerability where an exception (such as an ImportError or a generic exception during rule evaluation) would cause the hook to exit with status 0 and allow the gated tool execution. Now, exceptions will emit a permissionDecision: 'deny', ensuring unauthorized actions are prevented when the hook fails.
Resolves #84302