Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent enforcement of allowed location types during catalog processing. Under certain configurations, the catalog backend could process location types that were not intended to be allowed, potentially leading to unintended file access on the backend host. This issue is fixed in version 3.9.1.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/backstage/backstage/commit/23774b61560d851bc69cd6a77d12561b24d11afd Patch
- https://github.com/backstage/backstage/security/advisories/GHSA-pcmq-25r3-5w9v Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.5 · linuxfoundationNVD modified 2026-10-16 15:33
Affected (CPE criteria) 2
cpe:2.3:a:linuxfoundation:backstage_plugin-catalog-backend:*:*:*:*:*:node.js:*:*cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*