CVE-2026-5724 | temporal up to 1.28.3/1.29.5/1.30.3 StreamWorkflowReplicationMessages endpoint missing authentication

VDB-356946 · CVE-2026-5724 · GCVE-0-2026-5724 TEMPORAL UP TO 1.28.3/1.29.5/1.30.3 STREAMWORKFLOWREPLICATIONMESSAGES ENDPOINT MISSING AUTHENTICATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 7.0 $0-$5k 1.68+ Summaryinfo A vulnerability, which was classified as critical, was found in temporal up to 1.28.3/1.29.5/1.30.3. The impacted element is an unknown function of the file streaming AdminService/StreamWorkflowReplicationMessages endpoint. The manipulation results in missing authentication. This vulnerability is identified as CVE-2026-5724. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component. Detailsinfo A vulnerability was found in temporal up to 1.28.3/1.29.5/1.30.3. It has been classified as critical. Affected is some unknown functionality of the file streaming AdminService/StreamWorkflowReplicationMessages endpoint. The manipulation with an unknown input leads to a missing authentication vulnerability. CWE is classifying the issue as CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes: 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. Temporal Cloud is not affected. The weakness was released with UiPath. The advisory is available at github.com. This vulnerability is traded as CVE-2026-5724 since 04/06/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. Upgrading to version 1.28.4 eliminates this vulnerability. The upgrade is hosted for download at github.com. Productinfo Name temporal Version 1.28.0 1.28.1 1.28.2 1.28.3 1.29.0 1.29.1 1.29.2 1.29.3 1.29.4 1.29.5 1.30.0 1.30.1 1.30.2 1.30.3 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 7.3 VulDB Meta Temp Score: 7.0 VulDB Base Score: 7.3 VulDB Temp Score: 7.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Missing authentication CWE: CWE-306 / CWE-287 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: temporal 1.28.4 Timelineinfo 04/06/2026 CVE reserved 04/10/2026 +4 days Advisory disclosed 04/10/2026 +0 days VulDB entry created 04/10/2026 +0 days VulDB entry last update Sourcesinfo Advisory: github.com Organization: UiPath Status: Confirmed CVE: CVE-2026-5724 (🔒) GCVE (CVE): GCVE-0-2026-5724 GCVE (VulDB): GCVE-100-356946 Entryinfo Created: 04/10/2026 23:39 Changes: 04/10/2026 23:39 (72) Complete: 🔍 Cache ID: 99:EFB:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸