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CVE-2025-14987— Cross Namespace Commands Authorization Bypass

Quick assessment

Affected
Temporal Temporal
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Temporal是temporal.io开源的一个持久化执行平台。 Temporal—durable 1.29.1及之前版本存在安全漏洞，该漏洞源于跨命名空间命令授权不当，可能导致未授权创建工作流。

AI Predicted 8.1 Difficulty: Easy EPSS 0.40% · P32

Possible ATT&CK Techniques 1 AI

T1528 · Steal Application Access Token
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I. Basic Information for CVE-2025-14987

Vulnerability Information
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Vulnerability Title
Cross Namespace Commands Authorization Bypass
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Temporal—durable 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Temporal是temporal.io开源的一个持久化执行平台。 Temporal—durable 1.29.1及之前版本存在安全漏洞，该漏洞源于跨命名空间命令授权不当，可能导致未授权创建工作流。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Temporal Temporal 0 ~ 1.29.1 -

II. Public POCs for CVE-2025-14987

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III. Intelligence Information for CVE-2025-14987

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Other References for CVE-2025-14987 (3)

IV. Related Vulnerabilities

Same product: Temporal
Same vendor: Temporal
Same weakness: CWE-863

V. Comments for CVE-2025-14987

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