{"cve":"CVE-2026-106505","nvd":{"published":"2026-10-06T22:17:05.837","modified":"2026-10-09T17:58:21.970","status":"Analyzed","description":"Backstage is an open framework for building developer portals. Prior to 1.14.6 and 1.15.4, the @backstage/plugin-techdocs-node package is affected by bypass of mkdocs configuration sanitizer in techdocs backend. Users with the ability to commit changes to a repository that uses TechDocs can circumvent the MkDocs configuration file sanitizer introduced in response to CVE-2026-25153 and execute arbitrary code on the TechDocs backend host during documentation generation. This issue is fixed in versions 1.14.6 and 1.15.4.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","score":8.5},"cwes":["CWE-426","CWE-436"],"references":["https://github.com/backstage/backstage/commit/a7d995f11a5d27f0efbdbe8bb6c21b06988c79c9","https://github.com/backstage/backstage/commit/ef92d3d2b76046205c580e7152956514c15640db","https://github.com/backstage/backstage/releases/tag/v1.50.5","https://github.com/backstage/backstage/releases/tag/v1.54.6","https://github.com/backstage/backstage/security/advisories/GHSA-p75x-jh7p-ppcx"],"products":["linuxfoundation:backstage","linuxfoundation:backstage_plugin-techdocs-node"],"source":"nvd","synced_at":"2026-10-19T22:58:01.639778232+00:00"},"epss":{"cve":"CVE-2026-106505","score":0.00312,"percentile":0.23832,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-p75x-jh7p-ppcx","url":"https://osv.dev/vulnerability/GHSA-p75x-jh7p-ppcx","summary":"Backstage: Bypass of MkDocs configuration sanitizer in TechDocs backend","modified":"2026-10-07T16:30:05.289295195Z","packages":[{"ecosystem":"npm","name":"@backstage/plugin-techdocs-node","purl":"pkg:npm/%40backstage/plugin-techdocs-node","ranges":["<1.15.4"],"fixed":["1.15.4"]}]}],"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."]}