CVE-2026-73293
Published:August 12, 2026
Updated:August 31, 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.
Affected Packages
https://github.com/semaphoreui/semaphore.git (GITHUB):
Affected version(s) >=v1 <v2.18.19Fix Suggestion:
Update to version v2.18.19https://github.com/semaphoreui/semaphore.git (GITHUB):
Affected version(s) >=v2.19.0-alpha3 <v2.19.5-beta5Fix Suggestion:
Update to version v2.19.5-beta5github.com/semaphoreui/semaphore (GO):
Affected version(s) >=v0.0.0-20260503162756-dac3cdc5c133 <v0.0.0-20260709135555-3160e3d8f666Fix Suggestion:
Update to version v0.0.0-20260709135555-3160e3d8f666Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Privilege Management
EPSS
Base Score:
0.40