GHSA-p2gr-hm8g-q772

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GHSA-p2gr-hm8g-q772

Summary: Temporal has a namespace policy bypass allowing requests to be authorized for incorrect contexts

Details: 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.

References: https://nvd.nist.gov/vuln/detail/CVE-2025-14986, https://github.com/temporalio/temporal/pull/8839, https://github.com/temporalio/temporal, https://github.com/temporalio/temporal/releases/tag/v1.27.4, https://github.com/temporalio/temporal/releases/tag/v1.28.2, https://github.com/temporalio/temporal/releases/tag/v1.29.2