CVE Catalog

CVE-2026-84673

HighCVSS 8.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.29%

21th percentile - higher than 21% of all known CVEs

Summary

Vulnerability in Jenkins Customizable Header Plugin 295.v2544b_ca_19b_97 and earlier allows overwriting the plugin's appearance configuration through Stapler data binding, enabling attackers to configure a custom SVG icon with inline JavaScript, resulting in stored XSS.

Risk Assessment

Risk of malicious script execution in the user's browser, potentially leading to session theft, account takeover, or other attacks within Jenkins context.

Recommendation

Update Jenkins Customizable Header Plugin to the latest version. Restrict plugin appearance configuration permissions to trusted administrators only.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS