Bug 2435575 (CVE-2026-25152) - CVE-2026-25152 @backstage/plugin-techdocs-node: @backstage/plugin-techdocs-node Path Traversal in TechDocs Local Generator
Summary: CVE-2026-25152 @backstage/plugin-techdocs-node: @backstage/plugin-techdocs-no...
Keywords:
Status: NEW
Alias: CVE-2026-25152
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-01-30 22:01 UTC by OSIDB Bzimport
Modified: 2026-01-30 22:53 UTC (History)
10 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-01-30 22:01:16 UTC 
Backstage is an open framework for building developer portals, and @backstage/plugin-techdocs-node provides common node.js functionalities for TechDocs. In versions of @backstage/plugin-techdocs-node prior to 1.13.11 and 1.14.1, a path traversal vulnerability in the TechDocs local generator allows attackers to read arbitrary files from the host filesystem when Backstage is configured with `techdocs.generator.runIn: local`. When processing documentation from untrusted sources, symlinks within the docs directory are followed by MkDocs during the build process. File contents are embedded into generated HTML and exposed to users who can view the documentation. This vulnerability is fixed in` @backstage/plugin-techdocs-node` versions 1.13.11 and 1.14.1. Some workarounds are available. Switch to `runIn: docker` in `app-config.yaml` and/or restrict write access to TechDocs source repositories to trusted users only.
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