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CVE-2026-39840

Published: Apr 7, 2026

Modified: Apr 7, 2026

PUBLISHED

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.

Vendor	Product	Versions
Wikimedia Foundation	Mediawiki - Cargo Extension	affected `0 - < 3.8.7`

Weaknesses (CWE)

References

https://phabricator.wikimedia.org/T416368

https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1237966

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CVE-2026-39840 - Security Vulnerability | QwikSec