CVE-2026-112305Semaphore UI through 2.19.16 RCE via Task Environment Ansible Variable Override
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-915
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 19, 2026
Affected products
semaphoreui Semaphore UI semaphoreui:semaphore_ui (from the name) | through 2.19.16 | CNA record |
References
- https://github.com/semaphoreui/semaphore/pull/3888issue-tracking, technical-description, patch
- https://github.com/semaphoreui/semaphore/blob/v2.19.16/services/tasks/TaskRunner.go#L395-L431technical-description
- https://github.com/semaphoreui/semaphore/blob/v2.19.16/api/projects/tasks.go#L39-L75technical-description
- https://github.com/semaphoreui/semaphoreproduct
- https://www.vulncheck.com/advisories/semaphore-ui-through-2.19.16-rce-via-task-environment-ansible-variable-overridethird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.