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CVE

CVE-2026-73294

Semaphore U: OS Command Injection
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CVE

CVE-2026-73294

Semaphore U: OS Command Injection

Semaphore UI is a web interface for managing DevOps tools. Prior to 2.18.17 and 2.19.5-beta2, repository git_url handling passes an attacker-controlled --upload-pack option to CmdGitClient.GetLastRemoteCommitHash through POST /api/project/{id}/repositories and scheduled commit-hash polling, allowing a project Manager or Owner to execute arbitrary OS commands in the Semaphore server process. This issue is fixed in versions 2.18.17 and 2.19.5-beta2.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
0
-
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/semaphoreui/semaphore/tree/v2.18.17, https://github.com/semaphoreui/semaphore/tree/v2.19.5-beta2, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73294.json, https://github.com/semaphoreui/semaphore/security/advisories/GHSA-xp7j-h7jc-4w8p, https://nvd.nist.gov/vuln/detail/CVE-2026-73294, https://github.com/semaphoreui/semaphore/commit/7e8a9434bd81b82cf42220151c74801ea97542d6, https://github.com/semaphoreui/semaphore/commit/a7a7a33a64aea382a0726b3722856f298663eacf

Severity

9.9

CVSS Score
0
10

Basic Information

Base CVSS
9.9
EPSS Probability
0.00448%
EPSS Percentile
0.37206%
Introduced Version
9476b380cd0b5a411bb3ca236ab57a7f6e8a1c25
Fix Available
a7a7a33a64aea382a0726b3722856f298663eacf

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