{"id":"GHSA-p75x-jh7p-ppcx","revision":"de6376bb0a8c4744af0445a946d739f0","records":[{"revision":"de6376bb0a8c4744af0445a946d739f0","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-p75x-jh7p-ppcx","aliases":["CVE-2026-106505"],"title":"Backstage: Bypass of MkDocs configuration sanitizer in TechDocs backend","description":"### Impact\n\nUsers 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.\n\n### Patches\n\nPatched in`@backstage/plugin-techdocs-node` version `1.15.4`\n\n### Workarounds\n\nIf you cannot upgrade immediately:\n\n- Use Docker mode with restricted access: Configure TechDocs with `runIn: docker` instead of `runIn: local`. This provides container isolation, though it does not fully mitigate the risk.\n- Limit repository write access to trusted parties, since exploitation requires the ability to commit files to a repository with TechDocs enabled.\n- Review incoming changes to MkDocs configuration files as part of your code review process.","state":0,"publishedAt":"2026-10-07T16:23:52+00:00","modifiedAt":"2026-10-07T16:30:05.2892952+00:00","affected":[{"ecosystem":"npm","name":"@backstage/plugin-techdocs-node","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.15.4"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/backstage/backstage/security/advisories/GHSA-p75x-jh7p-ppcx","https://nvd.nist.gov/vuln/detail/CVE-2026-106505","https://github.com/backstage/backstage/commit/a7d995f11a5d27f0efbdbe8bb6c21b06988c79c9","https://github.com/backstage/backstage/commit/ef92d3d2b76046205c580e7152956514c15640db","https://github.com/backstage/backstage","https://github.com/backstage/backstage/releases/tag/v1.50.5","https://github.com/backstage/backstage/releases/tag/v1.54.6"],"sourceUrl":"https://github.com/advisories/GHSA-p75x-jh7p-ppcx","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-p75x-jh7p-ppcx","identifiers":["GHSA-p75x-jh7p-ppcx","CVE-2026-106505"]},"retained":false,"historicalAffected":[]}],"coverage":[]}