{"cve":"CVE-2026-5724","nvd":{"published":"2026-04-10T21:16:28.497","modified":"2026-07-08T20:17:00.123","status":"Awaiting Analysis","description":"The frontend gRPC server's streaming interceptor chain did not include the authorization interceptor. When a ClaimMapper and Authorizer are configured, unary RPCs enforce authentication and authorization, but the streaming AdminService/StreamWorkflowReplicationMessages endpoint accepted requests without credentials. This endpoint is registered on the same port as WorkflowService and cannot be disabled independently. An attacker with network access to the frontend port could open the replication stream without authentication. Data exfiltration is possible, but  only when a configured replication target is correctly configured and the attacker has knowledge of the cluster configuration, as the history service validates cluster IDs and peer membership before returning replication data.\n\n\n\n\nThe fix was applied per release line: it is present in 1.28.4, 1.29.6, 1.30.4, 1.31.2, and 1.32.0 and later releases on each line. Releases 1.31.0 and 1.31.1 do not contain the fix and are affected.\n\n\n\n\nTemporal Cloud is not affected.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:L/SI:N/SA:N/S:N/AU:N/R:U/RE:L","score":6.3},"cvss_v3":null,"cwes":["CWE-306"],"references":["https://github.com/temporalio/temporal/releases/tag/v1.28.4","https://github.com/temporalio/temporal/releases/tag/v1.29.6","https://github.com/temporalio/temporal/releases/tag/v1.30.4","https://github.com/temporalio/temporal/releases/tag/v1.31.2"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:28:59.047572785+00:00"},"epss":{"cve":"CVE-2026-5724","score":0.00527,"percentile":0.44661,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-q98v-9f9w-f49q","url":"https://osv.dev/vulnerability/GHSA-q98v-9f9w-f49q","summary":"Temporal does not enforce authentication and authorization for the streaming AdminService/StreamWorkflowReplicationMessages endpoint","modified":"2026-09-10T03:51:02.814787951Z","packages":[{"ecosystem":"Go","name":"go.temporal.io/server","purl":"pkg:golang/go.temporal.io/server","ranges":["<1.28.4"],"fixed":["1.28.4"]},{"ecosystem":"Go","name":"go.temporal.io/server","purl":"pkg:golang/go.temporal.io/server","ranges":[">=1.29.0-135.0 <1.29.6"],"fixed":["1.29.6"]},{"ecosystem":"Go","name":"go.temporal.io/server","purl":"pkg:golang/go.temporal.io/server","ranges":[">=1.30.0-143.0 <1.30.4"],"fixed":["1.30.4"]}]},{"id":"GO-2026-5578","url":"https://osv.dev/vulnerability/GO-2026-5578","summary":"Temporal does not enforce authentication and authorization for the streaming AdminService/StreamWorkflowReplicationMessages endpoint in go.temporal.io/server","modified":"2026-06-25T23:01:23.158969228Z","packages":[{"ecosystem":"Go","name":"go.temporal.io/server","purl":"pkg:golang/go.temporal.io/server","ranges":["<1.28.4",">=1.29.0-135.0 <1.29.6",">=1.30.0-143.0 <1.30.4"],"fixed":["1.28.4","1.29.6","1.30.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}