EUVD-2026-94056

Backstage: Improper URL validation in catalog entity placeholder resolution...

CVE-2026-106498

Backstage is an open framework for building developer portals. Prior to 3.5.1, 3.6.2, 3.7.2, 3.8.2 and 3.9.1, the @backstage/plugin-catalog-backend package is affected by improper url validation in catalog entity placeholder resolution. An authenticated Backstage user could craft a catalog entity...

CVE-2026-106498

The Backstage framework (prior to versions 3.5.1, 3.6.2, 3.7.2, 3.8.2, and 3.9.1) is vulnerable in the @backstage/plugin-catalog-backend package due to improper url validation during catalog entity placeholder resolution. An authenticated user can craft a catalog entity with placeholder directive...