{"schemaVersion":3,"id":"CVE-2026-44428","aliases":["CGA-7gx7-h89w-mjvw","CGA-rr75-23qc-m4v3","GHSA-95c3-6vvw-4mrq","GO-2026-5273"],"status":"published","duplicateOf":null,"title":null,"description":"The MCP Registry provides MCP clients with a list of MCP servers, like an app store for MCP servers. Prior to 1.7.6, the client-side and server-side GitHub OIDC flow is bound only to a global audience string, not to the specific registry instance being targeted. On the client side, the publisher always appends audience=mcp-registry when requesting the GitHub Actions ID token, regardless of the selected --registry URL. On the server side, the exchange endpoint validates only that same fixed audience and then derives publish permissions directly from repository_owner. As a result, a token legitimately obtained while interacting with one registry deployment remains acceptable to any other deployment that shares the same code and audience string. 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