CVE-2026-112305 Semaphore UI - Remote Code Execution

Semaphore UI through 2.19.16 contains a remote code execution caused by task_runner role users overriding protected Ansible variables via task environment JSON, letting attackers execute commands as the Semaphore server user, exploit requires task_runner role.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution, Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
19 October 2026
Updated
20 October 2026
Weakness
CWE-915

Vendor fix

Update to the latest version beyond 2.19.16.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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