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CVE-2026-73293

Semaphore UI: Manager-to-owner privilege escalation via custom-role slug collision PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
semaphoreui / semaphoreaffected < 2.18.19; affected >= 2.19.0-alpha3, < 2.19.5-beta5

CWE

CWE-269

References

ADP enrichment

CISA-ADP

No English description supplied.