CVE-2026-112305
CVE-2026-112305 · Semaphore UI through 2.19.16 RCE via Task Environment Ansible Variable Override
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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 8.7 · High · EPSS 0.6%
- Published
- Updated
Affected products and versions
semaphore ui
- Versions
- ≥ 0, ≤ 2.19.16: Affected (semver)
No fix published
Original sources
- https://github.com/semaphoreui/semaphore/pull/3888
- https://github.com/semaphoreui/semaphore/blob/v2.19.16/services/tasks/TaskRunner.go#L395-L431
- https://github.com/semaphoreui/semaphore/blob/v2.19.16/api/projects/tasks.go#L39-L75
- https://github.com/semaphoreui/semaphore
- https://www.vulncheck.com/advisories/semaphore-ui-through-2.19.16-rce-via-task-environment-ansible-variable-override
- https://nvd.nist.gov/vuln/detail/CVE-2026-112305