CVEvulnerability
CVE-2026-106556
7.7 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-10-07
- Last modified
- 2026-10-13
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.7 HIGH — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L
- Weaknesses
- CWE-184, CWE-78
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.
Affected configurations
• linuxfoundation backstage (< 1.50.5)
• linuxfoundation backstage (>= 1.51.1 < 1.54.6)
• linuxfoundation backstage 1.51.0
• linuxfoundation backstage plugin-techdocs-node (< 1.14.6)
• linuxfoundation backstage plugin-techdocs-node (>= 1.15.0 < 1.15.4)
Related
References
- https://github.com/backstage/backstage/commit/25125ee727a3de3418a8fa6a9e458cd5b73ecf26 Patch
- https://github.com/backstage/backstage/commit/b6d1aea0bef99b8dfec3c8746032474867ba677a Patch
- https://github.com/backstage/backstage/releases/tag/v1.50.5 Patch, Release Notes
- https://github.com/backstage/backstage/releases/tag/v1.54.6 Patch, Release Notes
- https://github.com/backstage/backstage/security/advisories/GHSA-g2hj-v2j6-vfvg Mitigation, Vendor Advisory