CVE-2026-106455

Description

Backstage is an open framework for building developer portals. From 0.11.12 until 1.14.7 and 1.15.5, the @backstage/plugin-techdocs-node package is affected by improper validation of mkdocs plugin configuration in techdocs. An authenticated attacker with control over a TechDocs source repository could cause a documentation build to retrieve and publish data from network locations reachable by the build environment. Exposure depends on deployment topology, build mode, and target endpoint protections. Modern cloud metadata services that require tokens or special headers are not directly accessible through the affected behavior. This issue is fixed in @backstage/plugin-techdocs-node versions 1.14.7 and 1.15.5.

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Produits concernés

• backstage
• @backstage plugin-techdocs-node
• Linuxfoundation backstage plugin-techdocs-node
• Linuxfoundation backstage

Scores CVSS

Faiblesses (CWE)

• CWE-918

Références

• https://github.com/backstage/backstage/commit/28aa82ae2815988721dd7bbf43cd69c431dcd71b Patch
• https://github.com/backstage/backstage/commit/9f76ea445088961f68c364764cc4b7734f368fc0 Patch
• https://github.com/backstage/backstage/releases/tag/v1.50.6 PatchRelease Notes
• https://github.com/backstage/backstage/releases/tag/v1.54.8 PatchRelease Notes
• https://github.com/backstage/backstage/releases/tag/v1.55.0 Release NotesVendor Advisory
• https://github.com/backstage/backstage/security/advisories/GHSA-q38j-6vcm-2f5m MitigationVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories