XSS in Wikimedia Foundation MediaWiki - Securepoll Extension
CVE-2025-53484
User-controlled inputs are improperly escaped in: * VotePage.php (poll option input) * ResultPage::getPagesTab() and getErrorsTab() (user-controllable page names) This allows attackers to inject JavaScript and compromise user sessions under certain conditions. This issue affects Mediawiki - SecurePoll extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.005 (37.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Wikimedia Foundation Mediawiki - Securepoll Extension — versions 1.39.x, 1.42.x, 1.43.x
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-53484?
- CVE-2025-53484 is a critical-severity vulnerability in Wikimedia Foundation MediaWiki - Securepoll Extension, classified under Cross-site Scripting. CVSS score: 9.8/10. Published 2025-07-04.
- How severe is CVE-2025-53484?
- Critical severity. CVSS v3 base score is 9.8 out of 10.