CVE-2026-84673 — Jenkins Project / Jenkins Customizable Header Plugin

CVE-2026-84673

Jenkins Project / Jenkins Customizable Header Plugin PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Jenkins Project / Jenkins Customizable Header Plugin	affected 0 through 295.v2544b_ca_19b_97

CWE

No CWE identifiers supplied.

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.