---
id: CVE-2026-73293
title: Semaphore UI is a web interface for managing DevOps tools
summary: >-
  Semaphore UI is a web interface for managing DevOps tools.  Prior to 2.18.19
  and from 2.19.0-alpha3 until 2.19.5-beta5, ProjectMiddleware and
  GetProjectOrGlobalRoleBySlug allow a project manager to use POST
  /api/project/{id}/roles to cre…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-269
vendor: semaphoreui
product: github.com/semaphoreui/semaphore
affected:
  - github.com/semaphoreui/semaphore < 0.0.0-20260705182501-bb2a4e1f08c8
patched:
  - github.com/semaphoreui/semaphore 0.0.0-20260705182501-bb2a4e1f08c8
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-2026-73293'
references:
  - url: >-
      https://github.com/semaphoreui/semaphore/commit/1c4bb65df114962134f8829d4a03667106a01a68
    label: security-advisories@github.com
  - url: >-
      https://github.com/semaphoreui/semaphore/commit/bb2a4e1f08c8023e618f8dd6eaca73554f2c33bb
    label: security-advisories@github.com
  - url: 'https://github.com/semaphoreui/semaphore/releases/tag/v2.18.19'
    label: security-advisories@github.com
  - url: 'https://github.com/semaphoreui/semaphore/releases/tag/v2.19.5-beta5'
    label: security-advisories@github.com
  - url: >-
      https://github.com/semaphoreui/semaphore/security/advisories/GHSA-cxvf-gvfq-36w2
    label: security-advisories@github.com
  - url: >-
      https://github.com/semaphoreui/semaphore/security/advisories/GHSA-cxvf-gvfq-36w2
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73293'
  - url: 'https://github.com/advisories/GHSA-cxvf-gvfq-36w2'
tags:
  - nvd
  - ghsa
  - go
epss: 0.00498
epssPercentile: 0.41759
aliases:
  - GHSA-cxvf-gvfq-36w2
ecosystem: go
ingestedAt: '2026-09-03T20:08:06.712Z'
---

## Overview

Semaphore UI is a web interface for managing DevOps tools.  Prior to 2.18.19 and from 2.19.0-alpha3 until 2.19.5-beta5, ProjectMiddleware and GetProjectOrGlobalRoleBySlug allow a project manager to use POST /api/project/{id}/roles to create a custom manager role with permission bitmask 15, overriding the built-in manager permissions and granting CanUpdateProject and CanManageProjectUsers owner capabilities. This issue is fixed in versions 2.18.19 and 2.19.5-beta5.

## Remediation

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

## Package advisory (CVE-2026-73293)

Affected packages:

- `github.com/semaphoreui/semaphore < 0.0.0-20260705182501-bb2a4e1f08c8`

Patched in:

- `github.com/semaphoreui/semaphore 0.0.0-20260705182501-bb2a4e1f08c8`

Source: https://github.com/advisories/GHSA-cxvf-gvfq-36w2