---
id: CVE-2026-84647
title: >-
  In Stapler 2107.v8dfcb_e8ed317 and earlier, except 2088.2093.vd7c3e58008a_6,
  included in Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, Stapler does
  not restrict the types of objects that can be instantiated via form data
  binding to…
summary: >-
  In Stapler 2107.v8dfcb_e8ed317 and earlier, except 2088.2093.vd7c3e58008a_6,
  included in Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, Stapler does
  not restrict the types of objects that can be instantiated via form data
  binding to…
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: '2026-09-02T17:40:10.896803Z'
published: '2026-09-02'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T19:06:04.140Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-84647'
references:
  - url: 'https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-3915'
    label: Jenkins Security Advisory 2026-09-02
tags:
  - cve.org
epss: 0.00518
epssPercentile: 0.41478
ingestedAt: '2026-09-17T19:26:25.325Z'
---

## Overview

In Stapler 2107.v8dfcb_e8ed317 and earlier, except 2088.2093.vd7c3e58008a_6, included in Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, Stapler does not restrict the types of objects that can be instantiated via form data binding to those compatible with the expected field type, allowing attackers with Overall/Read permission to instantiate types related to configuration for which that field type was not intended.

## Affected

- `Jenkins (all versions)`

## Remediation

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