CVE-2026-70426: Security vulnerability

Published Aug 5, 2026
·
Updated

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 Software

0 affected components

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Jenkins Remoting to a version that resolves this vulnerability.

    Fixed in 3384.v60d89463d9e0
  2. Upgrade

    Upgrade Jenkins to a version that resolves this vulnerability.

    Fixed in 2.575
  3. Upgrade

    Upgrade Jenkins LTS to a version that resolves this vulnerability.

    Fixed in 2.568.1

Event History

Aug 5, 2026
CVE Published
via MITRE·05:40 PM
Data Sourced
via MITRE·05:40 PM
Description
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