High · published October 7, 2026
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.
| Product | Versions | Fixed in |
|---|---|---|
| linuxfoundation/backstage_plugin-techdocs-node | < 1.14.6 | 1.14.6 |
| linuxfoundation/backstage_plugin-techdocs-node | ≥ 1.15.0, < 1.15.4 | 1.15.4 |
| linuxfoundation/backstage | < 1.50.5 | 1.50.5 |
| linuxfoundation/backstage | ≥ 1.51.1, < 1.54.6 | 1.54.6 |
| linuxfoundation/backstage | all versions | — |
| linuxfoundation/backstage | all versions | — |
| linuxfoundation/backstage | all versions | — |
| linuxfoundation/backstage | all versions | — |
| linuxfoundation/backstage | all versions | — |