CVE-2026-106556
highpriority · track · 0EPSS 0.003 · 17 %ileUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (5)
Products and version ranges known to be affected.
- linuxfoundation backstage plugin-techdocs-node< 1.14.6nvdUScpe:2.3:a:linuxfoundation:backstage_plugin-techdocs-node:*:*:*:*:*:*:*:*
- linuxfoundation backstage plugin-techdocs-node1.15.0 → 1.15.4nvdUScpe:2.3:a:linuxfoundation:backstage_plugin-techdocs-node:*:*:*:*:*:*:*:*
sources
Which sources assert this record, and when.
references (5) nvd
External citations — patches, advisories, analysis.
- https://github.com/backstage/backstage/commit/25125ee727a3de3418a8fa6a9e458cd5b73ecf26Patch
- https://github.com/backstage/backstage/commit/b6d1aea0bef99b8dfec3c8746032474867ba677aPatch
- https://github.com/backstage/backstage/releases/tag/v1.50.5PatchRelease Notes
- https://github.com/backstage/backstage/releases/tag/v1.54.6PatchRelease Notes
- https://github.com/backstage/backstage/security/advisories/GHSA-g2hj-v2j6-vfvgMitigationVendor Advisory
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