GHSA-3jfp-46x4-xgfj: yard: Possible arbitrary path traversal and file access via yard server

April 17, 2026

A path traversal vulnerability was discovered in YARD <= 0.9.41 when using yard server to serve documentation. This bug would allow unsanitized HTTP requests to access arbitrary files on the machine of a yard server host under certain conditions.

The original patch in GHSA-xfhh-rx56-rxcr was incorrectly applied.

References

github.com/advisories/GHSA-3jfp-46x4-xgfj
github.com/lsegal/yard
github.com/lsegal/yard/security/advisories/GHSA-3jfp-46x4-xgfj

Code Behaviors & Features

Detect and mitigate GHSA-3jfp-46x4-xgfj 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 →