Semaphore UI through 2.19.16 RCE via Task Environment Ansible Variable Override
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.
CVE-2026-112305
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-112305
Semaphore UI
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/semaphoreui/semaphore",
"vendor": "semaphoreui",
"product": "Semaphore UI",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "semver",
"lessThanOrEqual": "2.19.16"
}
],
"collectionURL": "https://github.com/semaphoreui/semaphore",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-112305
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #39087 · Revision 1
- Added to Heist Feed
- Publisher date