CVE-2026-106509

Fixed upstream EPSS <1%CVSS 7.7

Backstage is an open framework for building developer portals. Prior to 1.14.6, the @backstage/plugin-techdocs-node package is affected by improper validation of mkdocs theme configuration in techdocs. When TechDocs is configured to build documentation locally or in a container, a user with write access to a registered repository can include configuration values in mkdocs.yml that cause arbitrary code execution during the documentation build process. This issue is fixed in versions 1.14.6 and 1.15.4.

Published 2026-10-06 · CVE record · OSV

Products: backstage, @backstage plugin-techdocs-node

Fixed upstream