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CVE-2026-84673

Stored XSS via Plugin Configuration Injection in Jenkins Customizable Header Plugin

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 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Jenkins Project
Products
Jenkins Customizable Header Plugin