{"schemaVersion":3,"id":"CVE-2026-106509","aliases":["GHSA-8w7q-29mw-gf5c"],"status":"published","duplicateOf":null,"title":null,"description":"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. 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