---
id: CVE-2026-84652
title: >-
  In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, Jenkins does not rotate
  the session when a user is authenticated via the "remember me" cookie,
  allowing attackers able to serve content on the same site as Jenkins to set a
  known ses…
summary: >-
  In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, Jenkins does not rotate
  the session when a user is authenticated via the "remember me" cookie,
  allowing attackers able to serve content on the same site as Jenkins to set a
  known ses…
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N'
cwe:
  - CWE-384
vendor: jenkins
product: jenkins
affected:
  - jenkins < 2.568.3
  - jenkins < 2.580
patched:
  - jenkins 2.580
published: '2026-09-02'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T21:09:18.967'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-84652'
references:
  - url: 'https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4016'
    label: jenkinsci-cert@googlegroups.com
tags:
  - nvd
epss: 0.00471
epssPercentile: 0.39931
ingestedAt: '2026-09-12T00:03:49.032Z'
---

## Overview

In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, Jenkins does not rotate the session when a user is authenticated via the "remember me" cookie, allowing attackers able to serve content on the same site as Jenkins to set a known session cookie in the victim's browser, which after the victim authenticates via the "remember me" cookie, grants the attacker access to Jenkins as that user.

## Affected

- `jenkins < 2.568.3`
- `jenkins < 2.580`

## Remediation

Upgrade past the affected range:

- `jenkins 2.580`