CVE-2026-106488
CVE-2026-106488 · Backstage: Improper authentication in the OIDC provider
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Backstage is an open framework for building developer portals. Prior to 0.4.20, the @backstage/plugin-auth-backend-module-oidc-provider package is affected by improper authentication in the oidc provider. Deployments using OIDC email-based identity resolution with a provider that permits unverified email addresses may allow an authenticated provider user to assume another catalog identity. This may grant access and permissions associated with that user. No direct availability impact is demonstrated. This issue is fixed in version 0.4.20.
CVSS 8.1 · High · EPSS 0.3% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
backstage
- Versions
- < 1.54.6: Affected
No fix published
plugin-auth-backend-module-oidc-provider
- Versions
- < 0.4.20: Affected
No fix published
@backstage/plugin-auth-backend-module-oidc-provider npm
- Affected ranges
- SEMVER: < 0.4.20
Update to 0.4.20