PyYAML security vulnerabilities
Developer framework / library. Public CVE monitoring for PyYAML. Vendor security advisories are linked on this page.
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2 public records · 0 security-fix timeline events. 0 published in the last 7 days. 2 store a version range.
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Current vulnerabilities
KEV-first priority plus newest publications for this stack.
Verified security fixes
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Patch intelligence
Use version checkers and advisory links to confirm upgrades before you change production.
- Critical 0
- High 1
- Medium 0
- Low 0
2026-08-111 issues2026-11-08
Known exploited
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Recently published
Browse catalog- High7.8Hydra legacy target blacklist permits unsafe PyYAML loadingOpen the advisoryOct 27, 2026
- Critical9.8A remote code execution (RCE) vulnerability exists in the ms-swift project version 3.3.0 due to unsafe deserialization in tests/run.py using yaml.load() from the PyYAML library (veCheck if you run itEPSS 2.88%Aug 1, 2025