CVE-2026-106498

A flaw was found in @backstage/plugin-catalog-backend. An authenticated remote user can craft a catalog entity containing placeholder directives that reference resources outside the entity's source repository due to improper URL validation. Under certain configurations, this can lead to informati...

CVE-2026-106498: Incorrect Authorization

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...