漏洞信息
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Vulnerability Title
@backstage/plugin-auth-backend: SSRF in experimental CIMD metadata fetch
Vulnerability 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.
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U
Vulnerability Type
服务端请求伪造(SSRF)
Vulnerability Title
Backstage 代码问题漏洞
Vulnerability Description
Backstage是Backstage开源的一个应用软件。后台是一个开放的平台,用于构建开发者门户。 Backstage 0.27.1之前版本存在代码问题漏洞,该漏洞源于启用实验性客户端ID元数据文档功能时存在服务端请求伪造,可能导致内部请求。
CVSS Information
N/A
Vulnerability Type
N/A