medium4.3
CVE-2026-106497
Backstage is an open framework for building developer portals.
Impact
Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent catalog property permission evaluation. In deployments that use affected value-based catalog permission conditions as a confidentiality boundary, an authenticated user could receive catalog entity data that policy authors intended to restrict. This issue is fixed in version 3.9.1.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linuxfoundation | Backstage Plugin-Catalog-Backend | before 3.9.1 |
| Linuxfoundation | Backstage | before 1.54.6 |