Description
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.
Affected products
jenkins: jenkins
References1
- www.jenkins.io/security/advisory/2026-09-02/#SECURITY-3908 Vendor Advisory
Metrics
- CVSS 3.1
-
4.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - EPSS — exploit probability
- 1% percentile: 44 · as of 2 November 2026
- CWE
- CWE-502
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