fix: validate user_id and session_id against path traversal in FileArtifactService#5206
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enjoykumawat wants to merge 1 commit intogoogle:mainfrom
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fix: validate user_id and session_id against path traversal in FileArtifactService#5206enjoykumawat wants to merge 1 commit intogoogle:mainfrom
enjoykumawat wants to merge 1 commit intogoogle:mainfrom
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…tifactService FileArtifactService validated filenames for path traversal but used user_id and session_id directly in Path() construction without validation. A user_id or session_id containing ../ segments could escape the root_dir. Add _validate_path_segment() to reject path separators (/, \) and traversal sequences (..) in these parameters. Fixes google#5110
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Summary
_validate_path_segment()to reject path separators and traversal sequences inuser_idandsession_idFileArtifactServiceaffected — GCS and InMemory use string keysRoot Cause
_resolve_scoped_artifact_pathvalidates filenames butuser_id/session_idwere used directly inPath()construction. Auser_idcontaining../could escaperoot_dir.Test Plan
../in user_id/session_id now raises ValueErrorFixes #5110