Kurz gesagt
- CVE-2026-106505 ist eine Schwachstelle (HOCH (CVSS 8.5)) in backstage (linuxfoundation), backstage plugin-techdocs-node (linuxfoundation), @backstage/plugin-techdocs-node.
- Wahrscheinlichkeit einer Ausnutzung in den nächsten 30 Tagen (EPSS): 0.31%, höher als bei 24.1% aller Schwachstellen.
- Abhilfe: auf 1.54.6, 1.50.5, 1.15.4, 1.14.6 oder neuer aktualisieren.
Description
Impact
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.
Patches
Patched in@backstage/plugin-techdocs-node version 1.15.4
Workarounds
If you cannot upgrade immediately:
- Use Docker mode with restricted access: Configure TechDocs with
runIn: docker instead of runIn: local. This provides container isolation, though it does not fully mitigate the risk.
- Limit repository write access to trusted parties, since exploitation requires the ability to commit files to a repository with TechDocs enabled.
- Review incoming changes to MkDocs configuration files as part of your code review process.
NVD description
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.
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free