XSS in Mediawiki
CVE-2022-34911
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().
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.010 (59.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Mediawiki — versions 1.38.0
- Fedoraproject Fedora — versions 36, 37
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Issue Tracking, Vendor Advisory)
- cve@mitre.org (vendor-advisory)
- cve@mitre.org (vendor-advisory)
- cve@mitre.org (mailing-list, Mailing List, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
- cve@mitre.org (vendor-advisory)
Frequently asked questions
- What is CVE-2022-34911?
- CVE-2022-34911 is a medium-severity vulnerability in Mediawiki, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-07-02.
- How severe is CVE-2022-34911?
- Medium severity. CVSS v3 base score is 6.1 out of 10.