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CVE-2026-91994— Semaphore UI through 2.19.12 Missing Authorization on GET and HEAD Requests

Quick assessment

Affected
semaphoreui semaphore
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.

Semaphore（一款持续集成/持续交付平台）在版本 2.19.12 及之前存在一个漏洞：其 中间件在处理请求时，对 GET 和 HEAD 请求免除了项目资源权限检查。因此，拥有“访客”（guest）或“任务运行器”（task_runner）角色的攻击者，可以通过向环境端点发送 GET 请求，读取到所有项目的配置环境，其中包括明文存储的秘密（secrets）、凭证和密码等信息。

CVSS 6.5 · Medium
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I. Basic Information for CVE-2026-91994

Vulnerability Information
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Vulnerability Title
Semaphore UI through 2.19.12 Missing Authorization on GET and HEAD Requests
Source: CVE Program / CVE List V5
Vulnerability Description
Semaphore UI through 2.19.12 exempts GET and HEAD requests from project resource permission checks in GetMustCanMiddleware. Attackers with guest or task_runner roles can read all project environments including plaintext secrets, credentials, and passwords via GET requests to the environment endpoint.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
semaphoreui semaphore 0 ~ 2.19.12 -

II. Public POCs for CVE-2026-91994

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III. Intelligence Information for CVE-2026-91994

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Vendor Advisories for CVE-2026-91994 (1)

Vendor Pages for CVE-2026-91994 (1)

Other References for CVE-2026-91994 (3)

IV. Related Vulnerabilities

Same product: semaphore
Same vendor: semaphoreui
Same weakness: CWE-862

V. Comments for CVE-2026-91994

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