{"cve":"CVE-2026-25152","nvd":{"published":"2026-01-30T22:15:56.190","modified":"2026-06-17T10:24:11.980","status":"Undergoing Analysis","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":6.5},"cwes":["CWE-22"],"references":["https://github.com/backstage/backstage/security/advisories/GHSA-w669-jj7h-88m9"],"products":["linuxfoundation:backstage"],"source":"nvd","synced_at":"2026-10-19T22:22:27.261130201+00:00"},"epss":{"cve":"CVE-2026-25152","score":0.00433,"percentile":0.37634,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-w669-jj7h-88m9","url":"https://osv.dev/vulnerability/GHSA-w669-jj7h-88m9","summary":"@backstage/plugin-techdocs-node vulnerable to possible Path Traversal in TechDocs Local Generator","modified":"2026-02-03T03:13:40.365410Z","packages":[{"ecosystem":"npm","name":"@backstage/plugin-techdocs-node","purl":"pkg:npm/%40backstage/plugin-techdocs-node","ranges":[">=1.14.0 <1.14.1"],"fixed":["1.14.1"]},{"ecosystem":"npm","name":"@backstage/plugin-techdocs-node","purl":"pkg:npm/%40backstage/plugin-techdocs-node","ranges":["<1.13.11"],"fixed":["1.13.11"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}