CVE-2026-73682
Semaphore prior to version 2.18.20 OS Command Injection via git_url Repository Handling
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-88 |
| Vendor | semaphoreui |
| Product | semaphore |
| Published | Aug 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
semaphoreui / semaphore
0 < 2.18.20
References
github.com: https://github.com/semaphoreui/semaphore github.com: https://github.com/semaphoreui/semaphore/security/advisories/GHSA-xp7j-h7jc-4w8p github.com: https://github.com/semaphoreui/semaphore/commit/5d87656a680600125fe78edec1f7a0d10484b52c vulncheck.com: https://www.vulncheck.com/advisories/semaphore-prior-to-version-os-command-injection-via-git-url-repository-handling
Credits
🔍 Faran Abdullah