CVE-2026-73292: semaphoreui semaphore · Cross-Site Request Forgery (CSRF)
Affects semaphoreui semaphoreSource CVE Database V5
Not known to be exploited · CVSS 8.3 High : upgrade to 2.18.21 soon.
Data as of 8 Nov 2026, 23:24 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 14% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 2.18.21
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:LExploitation evidence
Disclosed: evidence found.
CVE published 12 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
Public exploit code: GitHub proofs of concept
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.
What to do
Upgrade semaphore and semaphoreui/semaphore to 2.18.21.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| semaphoreuisemaphore | Affected
| Fixed in
|
GitHubsemaphoreui/semaphorepkg:github/semaphoreui/semaphoreOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade Semaphore UI to version 2.18.21 or later, where this CSRF vulnerability is fixed. No other mitigations are specified. Patch status is not explicitly stated in vendor advisories but the description confirms the issue is fixed in 2.18.21.
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.
References
- github.com/semaphoreui/semaphore/security/advisories/GHSA-8cj9-r88m-8945 (opens in a new tab)
- github.com/semaphoreui/semaphore/commit/2d6e2e3eb10e8bf688e2ab59609b909a012fad4c (opens in a new tab)
- github.com/semaphoreui/semaphore/commit/c59c3dc9035badcbf0609c7d35679c06e590a956 (opens in a new tab)
- github.com/semaphoreui/semaphore/releases/tag/v2.18.21 (opens in a new tab)