Description
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.
INFO
Published Date :
2026-03-12T18:37:11.330Z
Last Modified :
2026-04-15T20:46:50.517Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2026-32236 vulnerability.
| Vendors | Products |
|---|---|
| Backstage |
|
| Linuxfoundation |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-32236.
