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.
CVE-2026-25152
This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.0%, top 92% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.3
- EG Score
- 5.3(medium)
- EPSS
- 31.0%
- KEV
- Not listed
Published
January 30, 2026
Last Modified
February 19, 2026
References (1)
- security-advisories@githubhttps://github.com/backstage/backstage/security/advisories/GHSA-w669-jj7h-88m9
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| @backstage/plugin-techdocs-node | — | 1.13.11 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 13× in last 7d / 51× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-16 17:03 UTCEPSS rescore
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- 2026-06-07 15:25 UTCEPSS rescore
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- 2026-05-29 14:59 UTCEG score recompute
- 2026-05-29 13:44 UTCEPSS rescore
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Related CVEs(same CWE)
Frequently asked(5)
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Dependency Blast Radius
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