6.3

CVE-2026-5724: temporal technologies, inc. temporal

CVSS: 6.3v4.0MediumAwaiting analysis
AliasesCGA-964f-275m-262hCGA-c78w-6fxp-3mc2CGA-cmhv-5g8g-jjwv
Published 10-04-2026Last modified 08-07-2026
Open JSON

Vulnerability summary

CVE-2026-5724 is a medium (CVSS 6.3) vulnerability in temporal technologies, inc. temporal. EPSS estimates a 0.66% chance of exploitation in the next 30 days, higher than 50.8% of scored vulnerabilities.

Overall risk
25/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.3/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.66%
0%100%
Low · +0.14 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 2
OPENSUSE-SU-2026:21483-1CGA-PQXR-G3Q3-977C

Timeline

  1. 10-04-2026
    PublishedVulnerability first disclosed.
  2. 08-07-2026
    Last modifiedVulnerability information updated.

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. The 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. Temporal Cloud is not affected.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.66%

Chance of exploitation in the next 30 days

Percentile

51%

Versus all other CVEs

30-day change

+0.14 pp

From 0.53% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.66%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard11 products
  • tdbg< 1.30.4-r0
  • tdbg-fips< 1.30.4-r0
  • temporal-cassandra-tool< 1.30.4-r0
  • temporal-cassandra-tool-fips< 1.30.4-r0
  • temporal-elasticsearch-tool< 1.30.4-r0
Wolfi5 products
  • tdbg< 1.30.4-r0
  • temporal-cassandra-tool< 1.30.4-r0
  • temporal-elasticsearch-tool< 1.30.4-r0
  • temporal-server< 1.30.4-r0
  • temporal-sql-tool< 1.30.4-r0
Go.temporal.io1 product
  • server< 1.28.4 | ≥ 1.29.0-135.0, < 1.29.6 | ≥ 1.30.0-143.0, < 1.30.4
Temporal technologies, inc.1 product
  • temporal≥ 1.24.0, < 1.28.4 | ≥ 1.29.0, < 1.29.6 | ≥ 1.30.0, < 1.30.4 | ≥ 1.31.0, < 1.31.2

4 vendors · 18 products

References

9 links