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CVE-2026-112305— Semaphore UI through 2.19.16 RCE via Task Environment Ansible Variable Override

Quick assessment

Affected
semaphoreui Semaphore UI
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 UI（版本 2.19.16 及更早版本）存在一个远程代码执行漏洞。拥有 task_runner 角色的用户可以通过在任务环境 JSON 中提供任意密钥，覆盖受保护的 Ansible 变量。攻击者可提交任务，设置 并包含 ，或将 设置为 ，从而以 Semaphore 服务器用户的身份执行任意命令。该漏洞可能导致加密密钥、SSH 密钥以及存储的敏感信息泄露。

CVSS 8.8 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
semaphoreui Semaphore UI ≤ 2.19.16 affected
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I. Basic Information for CVE-2026-112305

Vulnerability Information
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Vulnerability Title
Semaphore UI through 2.19.16 RCE via Task Environment Ansible Variable Override
Source: CVE Program / CVE List V5
Vulnerability Description
Semaphore UI through 2.19.16 contains a remote code execution vulnerability that allows users with the task_runner role to override protected Ansible variables by supplying arbitrary keys in the task environment JSON. Attackers can POST tasks setting ansible_ssh_common_args with a ProxyCommand or ansible_connection=local to execute commands as the Semaphore server user, exposing encryption keys, SSH keys and stored secrets.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-915
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
semaphoreui Semaphore UI 0 ~ 2.19.16 -

II. Public POCs for CVE-2026-112305

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III. Intelligence Information for CVE-2026-112305

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Patches & Fixes for CVE-2026-112305 (1)

Vendor Advisories for CVE-2026-112305 (1)

Proof of Concept for CVE-2026-112305 (2)

Vendor Pages for CVE-2026-112305 (1)

IV. Related Vulnerabilities

Same vendor: semaphoreui
Same weakness: CWE-915

V. Comments for CVE-2026-112305

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