CVE-2026-112305
Semaphore UI through 2.19.16 contains a remote code execution vulnerability that allows users with…
- Risk score
- 62/100
- CVSS
- 8.8 v3.1
- Exploit chance (30 days)
- 0.6%
- Published
- 19 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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=lo…
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 8.8 high
References
- https://github.com/semaphoreui/semaphore
- https://github.com/semaphoreui/semaphore/blob/v2.19.16/api/projects/tasks.go#L39-L75
- https://github.com/semaphoreui/semaphore/blob/v2.19.16/services/tasks/TaskRunner.go#L395-L431
- https://github.com/semaphoreui/semaphore/pull/3888
- https://www.vulncheck.com/advisories/semaphore-ui-through-2.19.16-rce-via-task-environment-ansible-variable-override
Original 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.
Last activity 19 Oct 2026. Patch Forecast updates every hour.