Is there a public exploit for CVE-2026-117618?

No public exploit for CVE-2026-117618 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-117618?

CVE-2026-117618 scores CVSS 8.1 (v3.1), rated high.

8.1 High

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…

CVE-2026-117618

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.

Assessment

CVSS: 8.1 (v3.1)
Severity: High
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 28 October 2026
Last updated: 2 November 2026
Weakness: CWE-362
Assigner: jenkinsci-cert@googlegroups.com

CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

At the source

References

https://www.jenkins.io/security/advisory/2026-10-28/#SECURITY-4122

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