CVE-2026-106488: Backstage: Improper authentication in the OIDC provider

October 7, 2026

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.

References

github.com/advisories/GHSA-826h-28h9-65hg
github.com/backstage/backstage/commit/1b1f05e82161aaabc226c1d7d498d746956bf942
github.com/backstage/backstage/releases/tag/v1.54.6
github.com/backstage/backstage/security/advisories/GHSA-826h-28h9-65hg
nvd.nist.gov/vuln/detail/CVE-2026-106488

Code Behaviors & Features

Detect and mitigate CVE-2026-106488 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →