{"id":"CVE-2026-106505","title":"Backstage is an open framework for building developer portals","summary":"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…","severity":"high","cvss":7.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L","cwe":["CWE-426","CWE-436"],"vendor":"backstage","product":"backstage","affected":["backstage < 1.50.5","backstage >= 1.51.0-next.0, < 1.54.6","plugin-techdocs-node < 1.14.6","plugin-techdocs-node >= 1.15.0, < 1.15.4"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T22:17:05.837","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-106505","references":[{"url":"https://github.com/backstage/backstage/commit/a7d995f11a5d27f0efbdbe8bb6c21b06988c79c9","label":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/commit/ef92d3d2b76046205c580e7152956514c15640db","label":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/releases/tag/v1.50.5","label":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/releases/tag/v1.54.6","label":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/security/advisories/GHSA-p75x-jh7p-ppcx","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-06T22:23:15.968Z","slug":"CVE-2026-106505","body":"## Overview\n\nBackstage 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":42.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}