{"schema_version": "1.6.1", "id": "CVE-2026-57111", "summary": "Permissive CORS Configuration in REST API Allows Unrestricted Cross-Origin", "details": "Permissive Cross-Origin Resource Sharing (CORS) in the REST API (helix-rest, org.apache.helix.rest.server.filters.CORSFilter) in Apache Helix through 2.0.0 on all platforms allows a remote attacker controlling a web page visited by an authorized user to read responses from and issue cross-origin requests to administrative REST endpoints via a cross-origin request from an arbitrary origin, since the filter unconditionally returns Access-Control-Allow-Origin: * together with Access-Control-Allow-Credentials: true and reflects arbitrary Access-Control-Request-Method / Access-Control-Request-Headers values in preflight responses. Users are recommended to upgrade to version 2.0.1, which fixes this issue.", "affected": [{"ranges": [{"type": "SEMVER", "events": [{"introduced": "0"}, {"last_affected": "0"}]}]}], "references": [{"type": "WEB", "url": "https://lists.apache.org/thread/wy2yv90lvqzx46vkg35xrtfddffq9cfj"}]}