---
id: CVE-2026-73294
title: Semaphore UI is a web interface for managing DevOps tools
summary: >-
  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/projec…
severity: critical
cvss: 9.9
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-78
  - CWE-88
vendor: semaphoreui
product: github.com/semaphoreui/semaphore
affected:
  - github.com/semaphoreui/semaphore < 0.0.0-20260704181911-7e8a9434bd81
patched:
  - github.com/semaphoreui/semaphore 0.0.0-20260704181911-7e8a9434bd81
published: '2026-08-12'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:02:22.660'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73294'
references:
  - url: >-
      https://github.com/semaphoreui/semaphore/commit/7e8a9434bd81b82cf42220151c74801ea97542d6
    label: security-advisories@github.com
  - url: >-
      https://github.com/semaphoreui/semaphore/commit/a7a7a33a64aea382a0726b3722856f298663eacf
    label: security-advisories@github.com
  - url: >-
      https://github.com/semaphoreui/semaphore/security/advisories/GHSA-xp7j-h7jc-4w8p
    label: security-advisories@github.com
  - url: 'https://github.com/semaphoreui/semaphore/tree/v2.18.17'
    label: security-advisories@github.com
  - url: 'https://github.com/semaphoreui/semaphore/tree/v2.19.5-beta2'
    label: security-advisories@github.com
  - url: >-
      https://github.com/semaphoreui/semaphore/security/advisories/GHSA-xp7j-h7jc-4w8p
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73294'
  - url: 'https://github.com/semaphoreui/semaphore'
  - url: 'https://github.com/advisories/GHSA-xp7j-h7jc-4w8p'
tags:
  - nvd
  - osv
  - go
  - ghsa
epss: 0.00569
epssPercentile: 0.45619
aliases:
  - GHSA-xp7j-h7jc-4w8p
  - CVE-2026-73682
ecosystem: go
ingestedAt: '2026-09-08T19:08:49.635Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-73294)

Affected packages:

- `github.com/semaphoreui/semaphore < 0.0.0-20260704181911-7e8a9434bd81`

Patched in:

- `github.com/semaphoreui/semaphore 0.0.0-20260704181911-7e8a9434bd81`

Source: https://osv.dev/vulnerability/GHSA-xp7j-h7jc-4w8p