@backstage/plugin-auth-backend: Unauthenticated OAuth account takeover via `redirect_uri` allowlist bypass

Impact The allowlist matching used by the experimental dynamic client registration and client ID metadata document CIMD features in @backstage/plugin-auth-backend matched glob patterns against the full URL string. A wildcard could therefore match across URL component boundaries: a pattern such as...

PT-2026-60374

Name of the Vulnerable Software and Affected Versions ToolHive versions prior to 0.29.1 Description ToolHive contains a Server-Side Request Forgery SSRF issue where the private IP guard in pkg/networking/utilities.go fails to recognize IPv6 NAT64 address ranges, specifically the well-known prefix...

@backstage/plugin-auth-backend: SSRF in experimental CIMD metadata fetch

Impact 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 clientid hostname against private IP ranges but does not apply the same validation...

Backstage 代码问题漏洞

Backstage is an open-source application developed by Backstage. It serves as an open platform for building developer portals. Versions of Backstage prior to 0.27.1 contained code-related vulnerabilities. These vulnerabilities stemmed from server-side request forgeing when the experimental client ...