Server-side Request Forgery (SSRF) Affecting github.com/modelcontextprotocol/registry/internal/api/handlers/v0/auth package, versions <1.7.6
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMMODELCONTEXTPROTOCOLREGISTRYINTERNALAPIHANDLERSV0AUTH-17180453
- published5 Jun 2026
- disclosed8 May 2026
- creditZhengmin Yu, FORIMOC
Introduced: 8 May 2026
CVE-2026-44428 (opens in a new tab)How to fix?
Upgrade github.com/modelcontextprotocol/registry/internal/api/handlers/v0/auth to version 1.7.6 or higher.
Overview
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) due to the improper validation of the audience parameter in the OIDC authentication process. An attacker can gain unauthorized publish permissions by replaying a valid GitHub OIDC token obtained from one registry deployment to another deployment that shares the same audience configuration.