CVE-2026-70426

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.

Affected

Jenkins Project · Jenkins · Remoting

CVSS v3.1 CNA

9.0 CRITICALCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS

0.52% chance of exploitation in the next 30 days, 43rd percentile

Published

2026-08-05

Updated

2026-08-06

Proof-of-concept exploits (1)

• Secneural/CVE-POC0★ · 2026-09-13

References

• CVE Record
• NVD entry

Related

• CVE-2026-66447