CVE-2026-84653

Severity: low (CVSS 3.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-02 · updated 2026-09-15
Weakness: CWE-862

Description

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.

Affected products

Jenkins: from 2.421 through 2.579; from 2.426.1 through 2.568.2

References

https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-3981

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