CVE-2026-84646

4.3 mediumEPSS 0.5%

Medium (4.3) in jenkins jenkins. EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

4.3 medium

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-31)
CWE: CWE-502
Published: 2026-09-02
Modified: 2026-09-11
Record from: the NVD, synced 2026-10-19

Affected

jenkins:jenkins

References

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

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