CVE-2026-84650

In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, transient fields cannot be excluded from deserialization, allowing attackers able to submit configuration updates to specify the values of transient fields that will be deserialized, the impact depending on how those fields are used.

Score

CVSS 3.1 8.8 High

Status

Analyzed - jenkinsci-cert@googlegroups.com

Published

2026-09-02

Last modified

2026-09-17

Weaknesses

CWE-502, CWE-566

Affected products

• Jenkins (Jenkins)
• Jenkins (Jenkins Project)

References

• https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4032