[ CVE-2026-106556 · Published 7 Oct 2026 ]
Vulnerability in backstage
CVSS 7.7
EPSS <1%Fix available
[ Description ]Official description
Backstage is an open framework for building developer portals. Prior to 1.14.6, the @backstage/plugin-techdocs-node package is affected by configuration bypass in techdocs mkdocs.yml sanitization. Insufficient validation of MkDocs configuration during TechDocs generation could allow an authenticated user who can register or modify documentation sources to execute arbitrary commands in the build environment. Impact is limited to resources accessible to the TechDocs backend or build container. This issue is fixed in versions 1.14.6 and 1.15.4.
[ Fixes ]Fixes and patches
- Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
- Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
- Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
- Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
[ References ]References
- github.com/backstage/backstage/commit/25125ee727a3de3418a8fa6a9e458cd5b73ecf26Patch
- github.com/backstage/backstage/commit/b6d1aea0bef99b8dfec3c8746032474867ba677aPatch
- github.com/backstage/backstage/releases/tag/v1.50.5PatchRelease Notes
- github.com/backstage/backstage/releases/tag/v1.54.6PatchRelease Notes
- github.com/backstage/backstage/security/advisories/GHSA-g2hj-v2j6-vfvgMitigationVendor Advisory