CVE-2026-70426

CRITICAL9.0

Published 2026-08-05 · Updated 2026-08-05 · Source jenkinsci-cert@googlegroups.com

Description

In Remoting 3384.v60d89463d9e0 and earlier, except 3355.3357.v931d3c992987, included in Jenkins 2.575 and earlier, LTS 2.568.1 and earlier, the JEP-200 class filter is not applied to classes resolved via a fallback path in the Remoting deserialization implementation, allowing agent processes, code running on agents, and attackers with Agent/Connect permission to bypass the JEP-200 deserialization filter for classes on the Jenkins core classpath.

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

CWE-502

References

https://www.jenkins.io/security/advisory/2026-08-05/#SECURITY-3911

View on NVD

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