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CVE-2026-84673 is a stored cross-site scripting vulnerability in Jenkins Customizable Header Plugin version 295.v2544b_ca_19b_97 and earlier. Unsafe Stapler data binding permits overwriting the plugin appearance configuration. A permitted attacker can configure a custom SVG icon containing inline JavaScript, which is subsequently rendered and executes in affected users' browsers.
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A stored cross-site scripting vulnerability in Jenkins Customizable Header Plugin versions 295.v2544b_ca_19b_97 and earlier. Attackers can abuse Stapler data binding to overwrite appearance configuration and set a custom SVG icon containing inline JavaScript.
A stored cross-site scripting vulnerability in Jenkins Customizable Header Plugin caused by Stapler data binding permitting appearance-configuration overwrite and a custom SVG icon with inline JavaScript. It affects version 295.v2544b_ca_19b_97 and earlier and is rated CVSS v3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
A high-impact Jenkins plugin vulnerability requiring low privileges and permitting high confidentiality, integrity, and availability impact according to the supplied CVSS vector.
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Cross-references every affected SKU, including bundled OEM variants.
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