Description
In Jenkins 2.196 and earlier, LTS 2.176.3 and earlier, the f:expandableTextBox form control interpreted its content as HTML when expanded, resulting in a stored XSS vulnerability exploitable by users with permission to define its contents (typically Job/Configure).
Remediation
References
Related Vulnerabilities
PHP Improper Input Validation Vulnerability (CVE-2015-8873)
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Jboss EAP Deserialization of Untrusted Data Vulnerability (CVE-2017-7525)
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