Kurz gesagt
- CVE-2026-106509 ist eine Schwachstelle (HOCH (CVSS 8.8)) in backstage (linuxfoundation), backstage plugin-techdocs-node (linuxfoundation), @backstage/plugin-techdocs-node.
- Wahrscheinlichkeit einer Ausnutzung in den nächsten 30 Tagen (EPSS): 0.52%, höher als bei 44.0% aller Schwachstellen.
- Abhilfe: auf 1.54.6, 1.50.5, 1.15.4, 1.14.6 oder neuer aktualisieren.
Description
Impact
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.
Patches
Patched in @backstage/plugin-techdocs-node version 1.15.4
Workarounds
- Configure TechDocs with
techdocs.generator.runIn: 'docker' instead of 'local' to provide container isolation, though this does not fully mitigate the risk.
- Restrict write access to repositories registered in the Backstage catalog to trusted users.
NVD 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. This issue is fixed in versions 1.14.6 and 1.15.4.
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