Description

Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not escape button labels in the Jenkins UI, resulting in a cross-site scripting (XSS) vulnerability exploitable by attackers with the ability to control button labels.

Remediation

References

CVE-2021-21608

Related Vulnerabilities

WordPress 4.6.x Multiple Vulnerabilities (4.6 - 4.6.15)

Apache HTTP Server Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') Vulnerability (CVE-2008-0456)

WordPress Plugin Wordfence Security-Firewall & Malware Scan Cross-Site Scripting (3.8.6)

Moodle Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2016-5012)

SharePoint Out-of-bounds Read Vulnerability (CVE-2026-45485)

Severity

Medium

Classification

CVE-2021-21608 CWE-707 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Tags

Missing Update Known Vulnerabilities