CVE-2025-53485: Wikimedia Foundation Mediawiki - Securepoll Extension

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

SetTranslationHandler.php does not validate that the user is an election admin, allowing any (even unauthenticated) user to change election-related translation text. While partially broken in newer MediaWiki versions, the check is still missing. 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.

Affected products

• Wikimedia Foundation Mediawiki - Securepoll Extension: from 1.39, before 1.39.13 (fixed in 1.39.13); from 1.42, before 1.42.7 (fixed in 1.42.7); from 1.43, before 1.43.2 (fixed in 1.43.2)

Published 2025-07-04. Last modified 2026-06-17.