{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-106505","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-10-06T18:46:47.766Z","datePublished":"2026-10-06T21:43:08.370Z","dateUpdated":"2026-10-06T21:43:08.370Z"},"containers":{"cna":{"title":"Backstage: Bypass of MkDocs configuration sanitizer in TechDocs backend","problemTypes":[{"descriptions":[{"cweId":"CWE-426","lang":"en","description":"CWE-426: Untrusted Search Path","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-436","lang":"en","description":"CWE-436: Interpretation Conflict","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L","version":"3.1"}}],"references":[{"name":"https://github.com/backstage/backstage/security/advisories/GHSA-p75x-jh7p-ppcx","tags":["x_refsource_CONFIRM"],"url":"https://github.com/backstage/backstage/security/advisories/GHSA-p75x-jh7p-ppcx"},{"name":"https://github.com/backstage/backstage/commit/a7d995f11a5d27f0efbdbe8bb6c21b06988c79c9","tags":["x_refsource_MISC"],"url":"https://github.com/backstage/backstage/commit/a7d995f11a5d27f0efbdbe8bb6c21b06988c79c9"},{"name":"https://github.com/backstage/backstage/commit/ef92d3d2b76046205c580e7152956514c15640db","tags":["x_refsource_MISC"],"url":"https://github.com/backstage/backstage/commit/ef92d3d2b76046205c580e7152956514c15640db"},{"name":"https://github.com/backstage/backstage/releases/tag/v1.50.5","tags":["x_refsource_MISC"],"url":"https://github.com/backstage/backstage/releases/tag/v1.50.5"},{"name":"https://github.com/backstage/backstage/releases/tag/v1.54.6","tags":["x_refsource_MISC"],"url":"https://github.com/backstage/backstage/releases/tag/v1.54.6"}],"affected":[{"vendor":"backstage","product":"backstage","versions":[{"version":"< 1.50.5","status":"affected"},{"version":">= 1.51.0-next.0, < 1.54.6","status":"affected"}]},{"vendor":"@backstage","product":"plugin-techdocs-node","versions":[{"version":"< 1.14.6","status":"affected"},{"version":">= 1.15.0, < 1.15.4","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-06T21:43:08.370Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-p75x-jh7p-ppcx","discovery":"UNKNOWN"}}}}