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CVE PROGRAM SOURCE RECORD4.4 Medium

CVE-2026-106494

Backstage: Improper input validation in cloud storage URL readers

Description

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 could collide with protected files in the output directory. In certain deployment configurations, this could lead to content injection. This issue is fixed in version 0.17.8.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

backstage backstage

  • < 1.54.6affected

@backstage backend-defaults

  • < 0.17.8affected

References