CVE-2026-84673

HIGH CVSS 8.8 View on NVD ↗

Description

Jenkins Customizable Header Plugin 295.v2544b_ca_19b_97 and earlier allows overwriting the plugin's appearance configuration through Stapler data binding, allowing attackers to configure a custom SVG icon containing inline JavaScript, resulting in a stored cross-site scripting (XSS) vulnerability.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4104

Published: Sep 02, 2026 16:17 UTC Modified: Sep 02, 2026 17:18 UTC