GHSA-wccx-j62j-r448: Fickling has `always_check_safety()` bypass: pickle.loads and _pickle.loads remain unhooked

March 4, 2026

fickling.always_check_safety() does not hook all pickle entry points. pickle.loads, _pickle.loads, and _pickle.load remain unprotected, enabling malicious payload execution despite global safety mode being enabled.

References

github.com/advisories/GHSA-wccx-j62j-r448
github.com/trailofbits/fickling
github.com/trailofbits/fickling/commit/8c24c6edabceab156cfd41f4d70b650e1cdad1f7
github.com/trailofbits/fickling/releases/tag/v0.1.9
github.com/trailofbits/fickling/security/advisories/GHSA-wccx-j62j-r448

Code Behaviors & Features

Detect and mitigate GHSA-wccx-j62j-r448 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →