CVE-2026-84646

In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, user objects can appear as nested field values in other deserialized XML objects, allowing attackers with Overall/Read permission to create user objects by submitting crafted XML.

Score

CVSS 3.1 4.3 Medium

Status

Analyzed - jenkinsci-cert@googlegroups.com

Published

2026-09-02

Last modified

2026-09-02

Weaknesses

CWE-502

Affected products

• Jenkins (Jenkins)
• Jenkins (Jenkins Project)

References

• https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-3908