CVE-2026-25152

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/backstage/backstage/security/advisories/GHSA-w669-jj7h-88m9	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:linuxfoundation:backstage::::::::
	cpe:2.3:a:linuxfoundation:backstage::::::::

History

19 Feb 2026, 15:37

Type	Values Removed	Values Added
CPE		cpe:2.3:a:linuxfoundation:backstage::::::::
References	~~() https://github.com/backstage/backstage/security/advisories/GHSA-w669-jj7h-88m9 -~~	() https://github.com/backstage/backstage/security/advisories/GHSA-w669-jj7h-88m9 - Vendor Advisory
First Time		Linuxfoundation Linuxfoundation backstage

30 Jan 2026, 22:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-30 22:15

Updated : 2026-02-19 15:37

NVD link : CVE-2026-25152

Mitre link : CVE-2026-25152

CVE.ORG link : CVE-2026-25152

JSON object : View

Products Affected

linuxfoundation

backstage

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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