XSS in The Wikimedia Foundation MediaWiki - Campaignevents Extension
CVE-2026-39935
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - CampaignEvents Extension allows Cross-Site Scripting (XSS). This issue was remediated only on the `master` branch.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.003 (21.7th percentile) — read the EPSS interpretation.
Affected products
- The Wikimedia Foundation Mediawiki - Campaignevents Extension — versions 1.43, 1.44, 1.45