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.
Published: 2026-08-05
Score: 9 Critical
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 05 Aug 2026 19:45:00 +0000

Type Values Removed Values Added
Title Jenkins Remoting Deserialization Bypass Allows Arbitrary Code Execution via Agent

Wed, 05 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-502
Metrics cvssV3_1

{'score': 9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 05 Aug 2026 18:00:00 +0000

Type Values Removed Values Added
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.
References

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: jenkins

Published:

Updated: 2026-08-05T18:16:23.441Z

Reserved: 2026-08-04T14:13:20.602Z

Link: CVE-2026-70426

cve-icon Vulnrichment

Updated: 2026-08-05T18:16:13.114Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-05T19:30:05Z

Weaknesses
  • CWE-502

    Deserialization of Untrusted Data