GHSA-7649-WM97-W3J3 Backstage: Improper input validation in cloud storage URL readers

Impact An attacker with write access to a cloud storage bucket used by Backstage could craft object names that could collide with protected files in the output directory. In certain deployment configurations, this could lead to content injection. Patches Patched in @backstage/backend-defaults...

EUVD-2026-94015

Backstage: Improper input validation in cloud storage URL readers...

CVE-2026-106494

A flaw was found in the @backstage/backend-defaults package of Backstage. Improper input validation in cloud storage URL readers allows an attacker with write access to an associated cloud storage bucket to create specially crafted object names. Under certain deployment configurations, these name...

CVE-2026-106494

Backstage is an open framework for building developer portals. Prior to 0.17.8, the @backstage/backend-defaults package is affected by improper input validation in cloud storage url readers. An attacker with write access to a cloud storage bucket used by Backstage could craft object names that...

PT-2026-107279

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 0.17.8 Description The @backstage/backend-defaults package contains improper input validation within cloud storage URL readers. An attacker possessing write access to a cloud storage bucket utilized by the framework...