CVE-2025-14986 – ExecuteMultiOperation Namespace Policy Bypass

CVE ID : CVE-2025-14986

Published : Dec. 30, 2025, 9:15 p.m. | 1 hour, 8 minutes ago

Description : When frontend.enableExecuteMultiOperation is enabled, the server can apply namespace-scoped validation and feature gates for the embedded StartWorkflowExecutionRequest using its Namespace field rather than the outer, authorized ExecuteMultiOperationRequest.Namespace. This allows a caller authorized for one namespace to bypass that namespace’s limits/policies by setting the embedded start request’s namespace to a different namespace. The workflow is still created in the outer (authorized) namespace; only validation/gating is performed under the wrong namespace context.
This issue affects Temporal: from 1.24.0 through 1.29.1. Fixed in 1.27.4, 1.28.2, 1.29.2.

Severity: 1.3 | LOW

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