What’s Vulnerable › Vulnerabilities
CVE-2026-25152: @backstage/plugin-techdocs-node vulnerable to possible Path Traversal in TechDocs Local Generator
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-01-30 · updated 2026-06-17
- Weakness: CWE-22
Description
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.
Affected products
- backstage: before 1.13.11; from 1.14.0 before 1.14.1 — fixed in 1.13.11, 1.14.1
How to fix
Upgrade to a fixed version: backstage 1.13.11, 1.14.1. Check the vendor advisory for mitigations.
References
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