CVE-2026-84653

Jenkins 2.421 through 2.579 (both inclusive), LTS 2.426.1 through 2.568.2 (both inclusive) does not correctly perform permission checks in the Appearance configuration page, allowing attackers with Overall/Manage permission to modify Appearance configuration options they should not have access to.

  • Published Sep 2, 2026
  • CVSS 3.5 low
  • 0.3% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-84653 at the National Vulnerability Database