{"api_version":"1","generated_at":"2026-10-06T23:00:04+00:00","cve":"CVE-2026-106505","urls":{"html":"https://cve.report/CVE-2026-106505","api":"https://cve.report/api/cve/CVE-2026-106505.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-106505","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-106505"},"summary":{"title":"Backstage: Bypass of MkDocs configuration sanitizer in TechDocs backend","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.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-10-06 22:17:05","updated_at":"2026-10-06 22:17:05"},"problem_types":["CWE-426","CWE-436","CWE-426 CWE-426: Untrusted Search Path","CWE-436 CWE-436: Interpretation Conflict"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"7.7","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L","baseScore":7.7,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"LOW"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.7","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L","data":{"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":[{"url":"https://github.com/backstage/backstage/security/advisories/GHSA-p75x-jh7p-ppcx","name":"https://github.com/backstage/backstage/security/advisories/GHSA-p75x-jh7p-ppcx","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/backstage/backstage/releases/tag/v1.50.5","name":"https://github.com/backstage/backstage/releases/tag/v1.50.5","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/backstage/backstage/releases/tag/v1.54.6","name":"https://github.com/backstage/backstage/releases/tag/v1.54.6","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/backstage/backstage/commit/ef92d3d2b76046205c580e7152956514c15640db","name":"https://github.com/backstage/backstage/commit/ef92d3d2b76046205c580e7152956514c15640db","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/backstage/backstage/commit/a7d995f11a5d27f0efbdbe8bb6c21b06988c79c9","name":"https://github.com/backstage/backstage/commit/a7d995f11a5d27f0efbdbe8bb6c21b06988c79c9","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-106505","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106505","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"backstage","product":"backstage","version":"affected < 1.50.5","platforms":[]},{"source":"CNA","vendor":"backstage","product":"backstage","version":"affected >= 1.51.0-next.0, < 1.54.6","platforms":[]},{"source":"CNA","vendor":"@backstage","product":"plugin-techdocs-node","version":"affected < 1.14.6","platforms":[]},{"source":"CNA","vendor":"@backstage","product":"plugin-techdocs-node","version":"affected >= 1.15.0, < 1.15.4","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"backstage","vendor":"backstage","versions":[{"status":"affected","version":"< 1.50.5"},{"status":"affected","version":">= 1.51.0-next.0, < 1.54.6"}]},{"product":"plugin-techdocs-node","vendor":"@backstage","versions":[{"status":"affected","version":"< 1.14.6"},{"status":"affected","version":">= 1.15.0, < 1.15.4"}]}],"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."}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-426","description":"CWE-426: Untrusted Search Path","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-436","description":"CWE-436: Interpretation Conflict","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-10-06T21:43:08.370Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"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"}],"source":{"advisory":"GHSA-p75x-jh7p-ppcx","discovery":"UNKNOWN"},"title":"Backstage: Bypass of MkDocs configuration sanitizer in TechDocs backend"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-106505","datePublished":"2026-10-06T21:43:08.370Z","dateReserved":"2026-10-06T18:46:47.766Z","dateUpdated":"2026-10-06T21:43:08.370Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-06 22:17:05","lastModifiedDate":"2026-10-06 22:17:05","problem_types":["CWE-426","CWE-436","CWE-426 CWE-426: Untrusted Search Path","CWE-436 CWE-436: Interpretation Conflict"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L","baseScore":7.7,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"LOW"},"exploitabilityScore":1.8,"impactScore":5.3}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"106505","Ordinal":"1","Title":"Backstage: Bypass of MkDocs configuration sanitizer in TechDocs ","CVE":"CVE-2026-106505","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"106505","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"Backstage: Bypass of MkDocs configuration sanitizer in TechDocs "}]}}}