CVE-2026-73294
Published:August 12, 2026
Updated:August 31, 2026
Semaphore UI is a web interface for managing DevOps tools. Prior to 2.18.17 and 2.19.5-beta2, repository git_url handling passes an attacker-controlled --upload-pack option to CmdGitClient.GetLastRemoteCommitHash through POST /api/project/{id}/repositories and scheduled commit-hash polling, allowing a project Manager or Owner to execute arbitrary OS commands in the Semaphore server process. This issue is fixed in versions 2.18.17 and 2.19.5-beta2.
Affected Packages
https://github.com/semaphoreui/semaphore.git (GITHUB):
Affected version(s) >=v1 <v2.18.17Fix Suggestion:
Update to version v2.18.17https://github.com/semaphoreui/semaphore.git (GITHUB):
Affected version(s) >=v2.19.0-alpha3 <v2.19.5-beta2Fix Suggestion:
Update to version v2.19.5-beta2github.com/semaphoreui/semaphore (GO):
Affected version(s) >=v0.0.0-20260503162756-dac3cdc5c133 <v0.0.0-20260704184235-60defb221751Fix Suggestion:
Update to version v0.0.0-20260704184235-60defb221751Related Resources (7)
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Contact UsCVSS v4
Base Score:
9.4
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
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
9.9
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
EPSS
Base Score:
0.45