{"id":"CVE-2026-106557","revision":"42aa6ad6e83b4a3ba1965fcc07fe7270","records":[{"revision":"42aa6ad6e83b4a3ba1965fcc07fe7270","observedAt":"2026-10-25T04:17:41.466+00:00","statement":{"source":"nvd","id":"CVE-2026-106557","aliases":[],"title":"Backstage is an open framework for building developer portals. Prior to 1.14.6 and 1.15.4, the @backstage/plugin-techdocs-node package did not sufficiently validate TechDocs Markdown extension configuration. An authenticated user who can re…","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 did not sufficiently validate TechDocs Markdown extension configuration. An authenticated user who can register or modify documentation sources may cause a TechDocs build to access resources outside the intended documentation boundary, potentially exposing backend-host data or internal network resources. This issue is fixed in versions 1.14.6 and 1.15.4 when pymdown-extensions 10.21.3 or later is also used, normally through mkdocs-techdocs-core 1.7.0 or later.","state":0,"publishedAt":"2026-10-07T17:16:50.9+00:00","modifiedAt":"2026-10-08T21:33:42.423+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","score":7.7,"severity":"HIGH"}],"references":["https://github.com/backstage/backstage/commit/017ace52d9b327ededc6704cf17799c875ae0f29","https://github.com/backstage/backstage/commit/2d9de4ca117a529de4b6ed7dfb7aa507ca7b3f91","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-f7v3-xhm6-w245"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-106557","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-22","CWE-918"],"productCriteria":[],"sourceDates":{"published":"2026-10-07T17:16:50.900","lastModified":"2026-10-08T21:33:42.423"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-106557","identifiers":["CVE-2026-106557"]},"retained":false,"historicalAffected":[]}],"coverage":[]}