Answer in brief
CVE-2026-73293 records a High severity (CVSS 8.8) vulnerability in Semaphore UI: Manager-to-owner privilege escalation via custom-role slug collision. The current sources do not mark it as known exploited. The current feed maps semaphoreui/semaphore (generic), github.com/semaphoreui/semaphore (go). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps semaphoreui/semaphore (generic), github.com/semaphoreui/semaphore (go). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| semaphoreui/semaphoregeneric | < 2.18.19 || >= 2.19.0-alpha3, < 2.19.5-beta5 | Not reported |
| github.com/semaphoreui/semaphorego | <0.0.0-20260705182501-bb2a4e1f08c8 | 0.0.0-20260705182501-bb2a4e1f08c8 |
Published upstream
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 12, 2026
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.
Quoted source text, attributed separately from HOL analysis.