CVE-2026-106510
CVE-2026-106510 · Backstage: Remote code execution via crafted markdown_extensions in TechDocs mkdocs.yml
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Backstage is an open framework for building developer portals. Prior to 1.14.6, the @backstage/plugin-techdocs-node package is affected by remote code execution via crafted markdown_extensions in techdocs mkdocs.yml. An authenticated user who can register catalog entities can provide a crafted mkdocs.yml causing arbitrary OS command execution on the TechDocs build host when the docs are built. This issue is fixed in versions 1.14.6 and 1.15.4.
CVSS 7.7 · High · EPSS 0.5% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
backstage
- Versions
- < 1.50.5: Affected
- >= 1.51.0-next.0, < 1.54.6: Affected
No fix published
plugin-techdocs-node
- Versions
- < 1.14.6: Affected
- >= 1.15.0, < 1.15.4: Affected
No fix published
@backstage/plugin-techdocs-node npm
- Affected ranges
- SEMVER: < 1.15.4
Update to 1.15.4
Original sources
- https://github.com/backstage/backstage/security/advisories/GHSA-4488-j8vj-vqqv
- https://github.com/backstage/backstage/commit/02cd7cdbb18b687446277b5602adaee7f1d53cbb
- https://github.com/backstage/backstage/commit/a900a9953c8f7ad3ba1906d1d257725a9996cc9d
- https://github.com/backstage/backstage/releases/tag/v1.50.5
- https://github.com/backstage/backstage/releases/tag/v1.54.6
- https://nvd.nist.gov/vuln/detail/CVE-2026-106510