---
id: CVE-2026-53435
title: >-
  In Jenkins 2.567 and earlier, LTS 2.555.2 and earlier, it is possible for
  attackers to have Jenkins deserialize arbitrary types defined in Jenkins core
  or plugins from an attacker-controlled `config.xml` submission in a way that
  allows t…
summary: >-
  In Jenkins 2.567 and earlier, LTS 2.555.2 and earlier, it is possible for
  attackers to have Jenkins deserialize arbitrary types defined in Jenkins core
  or plugins from an attacker-controlled `config.xml` submission in a way that
  allows t…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: adp
vendor: Jenkins Project
product: Jenkins
affected:
  - Jenkins (all versions)
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-06-10T00:00:00+00:00'
exploitAvailable: true
published: '2026-06-10'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T12:05:08.469Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-53435'
references:
  - url: 'https://www.jenkins.io/security/advisory/2026-06-10/#SECURITY-3707'
    label: Jenkins Security Advisory 2026-06-10
tags:
  - cve.org
  - exploit-available
epss: 0.02163
epssPercentile: 0.81429
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/AmesianX/CVE-2026-53435'
  checkedAt: '2026-09-25T08:21:02.076Z'
ingestedAt: '2026-09-09T13:09:45.303Z'
---

## Overview

In Jenkins 2.567 and earlier, LTS 2.555.2 and earlier, it is possible for attackers to have Jenkins deserialize arbitrary types defined in Jenkins core or plugins from an attacker-controlled `config.xml` submission in a way that allows them to handle HTTP requests afterwards.
This can be used to impersonate any user and send HTTP requests on their behalf, up to and including use of the Script Console to run arbitrary code, or to read arbitrary files from the Jenkins controller.

## Affected

- `Jenkins (all versions)`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.