What is GHSA-hq87-q544-6grj?

GHSA-hq87-q544-6grj is a security advisory published by GitHub Security Advisories with High severity. Jenkins Customizable Header Plugin 295.v2544b_ca_19b_97 and earlier allows overwriting the plugin...

Which CVE IDs does GHSA-hq87-q544-6grj cover?

GHSA-hq87-q544-6grj covers the following CVE IDs: CVE-2026-84673. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-hq87-q544-6grj?

GHSA-hq87-q544-6grj has a CVSS v3 base score of 8.8, published by GitHub Security Advisories.

GHSA-hq87-q544-6grjHighCVSS 8.8

Jenkins Customizable Header Plugin 295.v2544b_ca_19b_97 and earlier allows overwriting the plugin...

Vendor

GitHub Security Advisories

Published

September 2, 2026

Last Modified

September 2, 2026

🔗 CVE IDs covered (1)

CVE-2026-84673 →

📋 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.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-84673
https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4104
https://github.com/advisories/GHSA-hq87-q544-6grj