In Jenkins 2.587 and earlier, LTS 2.580.1 and earlier, the HTTP endpoint for creating the first user account does not check whether the setup wizard has been completed, resulting in a race condition that allows unauthenticated attackers to create an administrator account while the initial user account is being replaced.
History

Mon, 02 Nov 2026 18:45:00 +0000

Type Values Removed Values Added
Title Race Condition Leading to Unauthenticated Administrator Creation in Jenkins

Mon, 02 Nov 2026 17:15:00 +0000

Type Values Removed Values Added
Title Race Condition Allows Unauthenticated Administrator Account Creation in Jenkins
Weaknesses CWE-409

Mon, 02 Nov 2026 15:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-362
CPEs cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*
cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Wed, 28 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Title Race Condition Allows Unauthenticated Administrator Account Creation in Jenkins
Weaknesses CWE-409

Wed, 28 Oct 2026 19:15:00 +0000

Type Values Removed Values Added
First Time appeared Jenkins
Jenkins jenkins
Jenkins Project
Jenkins Project jenkins
Vendors & Products Jenkins
Jenkins jenkins
Jenkins Project
Jenkins Project jenkins

Wed, 28 Oct 2026 17:00:00 +0000

Type Values Removed Values Added
Description In Jenkins 2.587 and earlier, LTS 2.580.1 and earlier, the HTTP endpoint for creating the first user account does not check whether the setup wizard has been completed, resulting in a race condition that allows unauthenticated attackers to create an administrator account while the initial user account is being replaced.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: jenkins

Published: 2026-10-28T16:48:32.556Z

Updated: 2026-10-28T16:48:32.556Z

Reserved: 2026-10-27T13:10:56.914Z

Link: CVE-2026-117618

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2026-10-28T17:18:21.133

Modified: 2026-11-02T15:02:42.607

Link: CVE-2026-117618

cve-icon Redhat

No data.