Vulnerability · Published Aug 12, 2026 · Assigned by GitHub_M
CVE-2026-73292Semaphore UI: CSRF vulnerability on password change endpoint - No CSRF token or password confirmation
High 8.3
In plain English
A high-severity cross-site request forgery in semaphore from semaphoreui. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official description
Semaphore UI is a web interface for managing DevOps tools. Prior to 2.18.21, the /api/users/{id}/password endpoint accepts a cross-site request using the authenticated user's semaphore session cookie without CSRF protection or current-password confirmation, allowing an unauthenticated attacker to change an administrator's or another user's password after user interaction. This issue is fixed in version 2.18.21.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/semaphoreui/semaphore | 0.0.0-20260707190631-c59c3dc9035b | GHSA-8cj9-r88m-8945 |
| Go | github.com/semaphoreui/semaphore | 0.0.0-20260707190631-c59c3dc9035b | GO-2026-6370 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| semaphoreui | semaphore | < 2.18.21 |
Weakness: CWE-352, CWE-620 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
References
- https://github.com/semaphoreui/semaphore/security/advisories/GHSA-8cj9-r88m-8945 x_refsource_CONFIRM
- https://github.com/semaphoreui/semaphore/commit/2d6e2e3eb10e8bf688e2ab59609b909a012fad4c x_refsource_MISC
- https://github.com/semaphoreui/semaphore/commit/c59c3dc9035badcbf0609c7d35679c06e590a956 x_refsource_MISC
- https://github.com/semaphoreui/semaphore/releases/tag/v2.18.21 x_refsource_MISC