CVE-2025-14986: Temporal

Low severity, CVSS 1.3. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Temporal Temporal: from 1.24.0, up to and including 1.29.1; from 1.24.0, up to and including 1.28.1; from 1.24.0, up to and including 1.27.3

Published 2025-12-30. Last modified 2026-06-17.