Cross Namespace Commands Authorization Bypass_CVE-2025-14987

5.3 / 10

MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L

Description

When system.enableCrossNamespaceCommands is enabled (on by default), the Temporal server permits certain workflow task commands (e.g. StartChildWorkflowExecution, SignalExternalWorkflowExecution, RequestCancelExternalWorkflowExecution) to target a different namespace than the namespace authorized at the gRPC boundary. The frontend authorizes RespondWorkflowTaskCompleted based on the outer request namespace, but the history service later resolves and executes the command using the namespace embedded in command attributes without authorizing the caller for that target namespace. This can allow a worker authorized for one namespace to create, signal, or cancel workflows in another namespace.
This issue affects Temporal: through 1.29.1. Fixed in 1.27.4, 1.28.2, 1.29.2.

Basic Information

ID CVE-2025-14987

Source Temporal

Published Dec 30, 2025 at 20:16

Affected Product

Vendor Temporal

Product Temporal

Affected Versions Temporal Temporal 0
Temporal Temporal 0
Temporal Temporal 0

CWE Classification

CWE-863

References

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    "published": "2025-12-30T20:16:20.154Z",
    "modified": "2025-12-30T20:16:20.154Z",
    "type": "cve",
    "title": "Cross Namespace Commands Authorization Bypass",
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