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| purl | pkg:npm/%40backstage/plugin-auth-backend@0.10.2 |
| Vulnerability | Summary | Fixed by |
|---|---|---|
|
VCID-g3nc-3rdj-akh2
Aliases: CVE-2026-32235 GHSA-wqvh-63mv-9w92 |
Backstage is an open framework for building developer portals. Prior to 0.27.1, the experimental OIDC provider in @backstage/plugin-auth-backend is vulnerable to a redirect URI allowlist bypass. Instances that have enabled experimental Dynamic Client Registration or Client ID Metadata Documents and configured allowedRedirectUriPatterns are affected. A specially crafted redirect URI can pass the allowlist validation while resolving to an attacker-controlled host. If a victim approves the resulting OAuth consent request, their authorization code is sent to the attacker, who can exchange it for a valid access token. This requires victim interaction and that one of the experimental features is explicitly enabled, which is not the default. This vulnerability is fixed in 0.27.1. |
Affected by 0 other vulnerabilities. |
|
VCID-k15p-db8h-sqbz
Aliases: CVE-2026-32236 GHSA-qp4c-xg64-7c6x |
Backstage is an open framework for building developer portals. Prior to 0.27.1, a Server-Side Request Forgery (SSRF) vulnerability exists in @backstage/plugin-auth-backend when auth.experimentalClientIdMetadataDocuments.enabled is set to true. The CIMD metadata fetch validates the initial client_id hostname against private IP ranges but does not apply the same validation after HTTP redirects. The practical impact is limited. The attacker cannot read the response body from the internal request, cannot control request headers or method, and the feature must be explicitly enabled via an experimental flag that is off by default. Deployments that restrict allowedClientIdPatterns to specific trusted domains are not affected. Patched in @backstage/plugin-auth-backend version 0.27.1. |
Affected by 0 other vulnerabilities. |
| Vulnerability | Summary | Aliases |
|---|---|---|
| This package is not known to fix vulnerabilities. | ||
| Date | Actor | Action | Vulnerability | Source | VulnerableCode Version |
|---|---|---|---|---|---|
| 2026-06-12T21:25:05.916691+00:00 | GitLab Importer | Affected by | VCID-g3nc-3rdj-akh2 | https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/@backstage/plugin-auth-backend/CVE-2026-32235.yml | 38.6.0 |
| 2026-06-12T21:23:10.226689+00:00 | GitLab Importer | Affected by | VCID-k15p-db8h-sqbz | https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/@backstage/plugin-auth-backend/CVE-2026-32236.yml | 38.6.0 |