MediaWiki: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (CVE-2022-34911)
Description
An issue was discovered in MediaWiki before 1.35.7, 1.36.x and 1.37.x before 1.37.3, and 1.38.x before 1.38.1. XSS can occur in configurations that allow a JavaScript payload in a username. After account creation, when it sets the page title to "Welcome" followed by the username, the username is not escaped: SpecialCreateAccount::successfulAction() calls ::showSuccessPage() with a message as second parameter, and OutputPage::setPageTitle() uses text().
Solution(s)
- mediawiki-upgrade-1_35_7
- mediawiki-upgrade-1_37_3
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