CVE-2026-84645: Vulnerability in Jenkins Project Jenkins
Description
In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, objects of types marked as storing their configuration in independent top-level configuration files in Jenkins (such as the global configuration and jobs) can appear as nested field values in user-submitted `config.xml` documents and subsequently handle HTTP requests via Stapler, resulting in remote code execution.
CVSS v3.1
Score 8.8high
Affected software
Jenkins Project
Jenkins
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-84645 is a vulnerability in Jenkins 2.579 and earlier, including LTS 2.568.2 and earlier, where certain configuration objects can be nested inside user-submitted config.xml files. These objects, which normally store their configuration in separate top-level files, can then handle HTTP requests through the Stapler web framework. This behavior can be exploited to achieve remote code execution on the Jenkins server. The vulnerability is associated with CWE-94 (Improper Control of Generation of Code) and CWE-915 (Improperly Controlled Modification of Dynamically-Determined Object Attributes).
Potential Impact
Successful exploitation of this vulnerability could allow an attacker with at least low privileges (PR:L) to execute arbitrary code remotely on the Jenkins server without user interaction. The impact includes full confidentiality, integrity, and availability compromise (C:H/I:H/A:H).
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been documented in the provided information. Until a patch is available, restrict access to Jenkins instances and limit user privileges to mitigate risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- jenkins
- Date Reserved
- 2026-09-01T21:55:27.032Z
- State
- PUBLISHED
Threat ID: 6a984660acd9273b496cc388
Added to database: 09/02/2026, 15:53:04 UTC
Last enriched: 09/07/2026, 18:22:30 UTC
Last updated: 10/16/2026, 06:48:19 UTC
Views: 91
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