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OpenAdvisories
Low · 3.0 CVE-2026-106493 EUVD-2026-94013GHSA-xvh9-35w9-42m4

Backstage: Cloud storage catalog locations may cross configured storage boundaries

Published Oct 6, 2026 · Updated Oct 7, 2026 · Assigned by GitHub_M

Description

Backstage is an open framework for building developer portals. Prior to 1.54.6, cloud storage catalog providers did not sufficiently validate object paths. A principal able to create or rename objects in a configured Azure Blob Storage or AWS S3 catalog source could cause catalog descriptors to be read from outside the intended storage boundary, limited to locations reachable with the backend's configured credentials. This issue is fixed in 1.54.6.

Affected products

VendorProductAffectedFixed
backstage backstage < 1.54.6 —
@backstage plugin-catalog-backend-module-azure < 0.17.8, < 0.3.21 —
@backstage plugin-catalog-backend-module-aws < 0.4.27 —

Affected packages

References