CVE-2026-106505
7.7
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L
Summary
Backstage is an open framework for building developer portals. Prior to 1.14.6 and 1.15.4, the @backstage/plugin-techdocs-node package is affected by bypass of mkdocs configuration sanitizer in techdocs backend. Users with the ability to commit changes to a repository that uses TechDocs can circumvent the MkDocs configuration file sanitizer introduced in response to CVE-2026-25153 and execute arbitrary code on the TechDocs backend host during documentation generation. This issue is fixed in versions 1.14.6 and 1.15.4.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| backstage | backstage | < 1.50.5 | affected |
| backstage | backstage | >= 1.51.0-next.0, < 1.54.6 | affected |
| @backstage | plugin-techdocs-node | < 1.14.6 | affected |
| @backstage | plugin-techdocs-node | >= 1.15.0, < 1.15.4 | affected |
Weaknesses
- CWE-426: CWE-426: Untrusted Search Path
- CWE-436: CWE-436: Interpretation Conflict
References
- https://github.com/backstage/backstage/security/advisories/GHSA-p75x-jh7p-ppcx
- https://github.com/backstage/backstage/commit/a7d995f11a5d27f0efbdbe8bb6c21b06988c79c9
- https://github.com/backstage/backstage/commit/ef92d3d2b76046205c580e7152956514c15640db
- https://github.com/backstage/backstage/releases/tag/v1.50.5
- https://github.com/backstage/backstage/releases/tag/v1.54.6
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