Critical severity9.9NVD Advisory· Published Aug 12, 2026· Updated Sep 9, 2026
CVE-2026-73294
CVE-2026-73294
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/semaphoreui/semaphoreGo | < 0.0.0-20260704181911-7e8a9434bd81 | 0.0.0-20260704181911-7e8a9434bd81 |
Affected products
1- Range: <2.18.17 and <2.19.5-beta2
Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-xp7j-h7jc-4w8pghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-73294ghsaADVISORY
- github.com/semaphoreui/semaphore/commit/7e8a9434bd81b82cf42220151c74801ea97542d6nvdWEB
- github.com/semaphoreui/semaphore/commit/a7a7a33a64aea382a0726b3722856f298663eacfnvdWEB
- github.com/semaphoreui/semaphore/security/advisories/GHSA-xp7j-h7jc-4w8pnvdWEB
- github.com/semaphoreui/semaphore/tree/v2.18.17nvdWEB
- github.com/semaphoreui/semaphore/tree/v2.19.5-beta2nvdWEB
News mentions
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