CVE-2026-44374: Linuxfoundation Backstage/plugin-Catalog-Backend-Module-Unprocessed

Medium severity, CVSS 4.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Backstage is an open framework for building developer portals. Prior to 0.6.11, the unprocessed entities read endpoints in @backstage/plugin-catalog-backend-module-unprocessed do not enforce permission authorization checks. Any authenticated user can access unprocessed entity records regardless of ownership. This is an information disclosure vulnerability affecting Backstage installations using this module. This is patched in @backstage/plugin-catalog-backend-module-unprocessed version 0.6.11, @backstage/plugin-catalog-unprocessed-entities-common version 0.0.15 and @backstage/plugin-catalog-unprocessed-entities version 0.2.30.

Affected products

• Linuxfoundation Backstage/plugin-Catalog-Backend-Module-Unprocessed: before 0.6.11 (fixed in 0.6.11)
• Linuxfoundation Backstage/plugin-Catalog-Unprocessed-Entities: before 0.2.30 (fixed in 0.2.30)
• Linuxfoundation Backstage/plugin-Catalog-Unprocessed-Entities-Common: before 0.0.15 (fixed in 0.0.15)

Published 2026-05-14. Last modified 2026-06-17.