CVE-2026-39840
Medium
Description
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Wikimedia Foundation Mediawiki - Cargo Extension allows XSS Targeting Non-Script Elements.This issue affects Mediawiki - Cargo Extension: before 3.8.7.
SeverityMedium
CVSS6.1
Exploit probability—
Product
Mediawiki Cargo
PublishedApr 7, 2026
First seenApr 7, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- mediawiki cargo3.8.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mediawiki cargo | v < 3.8.7 | 3.8.7 |
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