CVE-2026-73682

high

Description

Semaphore versions prior to 2.18.20 contain an OS command injection (argument injection) vulnerability in the repository git_url handling that allows authenticated users holding the Manager or Owner role on any project to achieve remote code execution on the Semaphore server host. Attackers can craft a malicious git_url value using git's --upload-pack= option to inject and execute arbitrary shell commands when the server processes repository operations using the default cmd_git client.

References

https://www.vulncheck.com/advisories/semaphore-prior-to-version-os-command-injection-via-git-url-repository-handling

https://github.com/semaphoreui/semaphore/security/advisories/GHSA-xp7j-h7jc-4w8p

https://github.com/semaphoreui/semaphore/commit/5d87656a680600125fe78edec1f7a0d10484b52c

https://github.com/semaphoreui/semaphore

Details

Source: Mitre, NVD

Published: 2026-08-14

Updated: 2026-08-14

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.8

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

CVSS v4

Base Score: 8.7

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Severity: High