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Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')


Severity Medium
Score 5.4/10


A malicious content author could add a Javascript payload to a page's meta description and get it executed in the versioned history compare view. This vulnerability requires access to the CMS to be deployed. The attacker must then convince a privileged user to access the version history for that page. "silverstripe/versioned-admin" versions prior to 1.11.1, 1.12.0-beta1, and 2.0.0-alpha1 are affected by this vulnerability.

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CWE-79 - Cross Site Scripting

Cross-Site Scripting, commonly referred to as XSS, is the most dominant class of vulnerabilities. It allows an attacker to inject malicious code into a pregnable web application and victimize its users. The exploitation of such a weakness can cause severe issues such as account takeover, and sensitive data exfiltration. Because of the prevalence of XSS vulnerabilities and their high rate of exploitation, it has remained in the OWASP top 10 vulnerabilities for years.

Advisory Timeline

  • Published