github.com/modelcontextprotocol/registry vulnerabilities

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CVE-IDSeverityPackage summary
CVE-2026-45781Lowgithub.com/modelcontextprotocol/registry: MCP Registry: OCI validator skips ownership check on upstream rate limitsCVE-2026-44430Mediumgithub.com/modelcontextprotocol/registry: MCP Registry has an unauthenticated SSRF: HTTP namespace verification dials 6to4 / NAT64 / site-local IPv6 addresses, bypassing…CVE-2026-44429Mediumgithub.com/modelcontextprotocol/registry: MCP Registry vulnerable to stored XSS in catalogue UI via attribute-quote breakout in publisher-controlled `websiteUrl`CVE-2026-44428Lowgithub.com/modelcontextprotocol/registry: MCP Registry's GitHub OIDC tokens are replayable across registry deployments due to shared audienceCVE-2026-44427Mediumgithub.com/modelcontextprotocol/registry: MCP Registry has open redirect via protocol-relative path in trailing-slash middleware

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