# CVE-2025-14987: Cross Namespace Commands Authorization Bypass

> CVE-2025-14987: Cross Namespace Commands Authorization Bypass. CVSS 5.3 (CVSS 4.0).

Canonical: https://rewindex.com/cve/CVE-2025-14987
Last updated: 2026-06-17T08:36:53Z

- Published: 2025-12-30 20:16 UTC · Updated: 2026-06-17 08:36 UTC · Assigner: Temporal
- CVSS: 5.3 (CVSS 4.0) · Severity: Medium
- EPSS: 0.40%, 34th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-863

## 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.

## Affected vendors and products

- Temporal: Temporal

## Tracked companies

- [Temporal Cloud](https://rewindex.com/company/temporal-cloud.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-14987)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-14987)
- [https://github.com/temporalio/temporal/releases/tag/v1.27.4](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/v1.28.2)
- [https://github.com/temporalio/temporal/releases/tag/v1.29.2](https://github.com/temporalio/temporal/releases/tag/v1.29.2)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-14987 · Markdown: https://rewindex.com/cve/CVE-2025-14987.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-14987 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:15:07.124Z