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CVE-2026-16652— Temporal Server Schedule exclusion search can cause excessive CPU consumption

一分钟漏洞结论

影响对象
Temporal Technologies, Inc. Temporal Server
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

Temporal Server did not bound the work performed while searching for a Schedule's next action time. An authenticated caller with namespace write permission could create or update a Schedule that combines a fine-grained cadence with an exclusion calendar that r

CVSS 7.1 · High EPSS 0.27% · P19

影响版本矩阵 3

厂商产品 版本范围状态
Temporal Technologies, Inc. Temporal Server 1.17.0≤ 1.29.7 affected
1.30.0< 1.30.7 affected
1.31.0< 1.31.3 affected
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一、 漏洞 CVE-2026-16652 基础信息

漏洞信息

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Vulnerability Title
Temporal Server Schedule exclusion search can cause excessive CPU consumption
来源: CVE Program / CVE List V5
Vulnerability Description
Temporal Server did not bound the work performed while searching for a Schedule's next action time. An authenticated caller with namespace write permission could create or update a Schedule that combines a fine-grained cadence with an exclusion calendar that rejects every candidate time, causing the server to evaluate excluded candidates without a per-search work budget. This can consume excessive CPU in Frontend and Schedule worker components. A persisted specification can also cause its backing Schedule Workflow to repeatedly fail and retry, allowing CPU consumption to continue without additional requests until the Schedule is deleted or its backing Workflow is terminated. Repeated or parallel exploitation can deny service. The issue affects availability only; it does not expose or modify Workflow data.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
循环条件输入未经检查
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
Temporal Technologies, Inc. Temporal Server 1.17.0 ~ 1.29.7 cpe:2.3:a:temporal:temporal:*:*:*:*:*:*:*:*

二、漏洞 CVE-2026-16652 的公开POC

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三、漏洞 CVE-2026-16652 的情报信息

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CVE-2026-16652 补丁与修复 (1)

CVE-2026-16652 其他参考 (2)

同批安全公告 · Temporal Technologies, Inc. · 2026-09-21 · 共 8 条

CVE-2026-89139 8.7 HIGH Temporal Server worker deployment compute provider executes a caller-supplied command on t
CVE-2026-65653 8.7 HIGH temporalio/tchannel-go zero-chunk call fragment causes process termination
CVE-2026-65654 8.7 HIGH temporalio/ringpop-go fails to enforce configured label limits on inbound membership gossi
CVE-2026-65652 8.7 HIGH temporalio/tchannel-go malformed checksum type causes process termination
CVE-2026-87858 7.2 HIGH Temporal Server completion callback source header can direct attacker-chosen requests to t
CVE-2026-16651 7.1 HIGH temporalio/sqlparser malformed MySQL version comments can cause a panic
CVE-2026-65651 6.0 MEDIUM temporalio/sqlparser deeply nested unary expressions can cause a fatal stack overflow duri

IV. Related Vulnerabilities

Same product: Temporal Server
Same vendor: Temporal Technologies, Inc.
Same weakness: CWE-606

V. Comments for CVE-2026-16652

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