Medium severity6.1NVD Advisory· Published Apr 7, 2026· Updated Apr 15, 2026

CVE-2026-39840

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

MediaWiki/Cargo
cpe:2.3:a:mediawiki:cargo:*:*:*:*:*:*:*:*
Range: <3.8.7

Patches

Vulnerability mechanics

References

gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1237966nvdPatch
phabricator.wikimedia.org/T416368nvdExploitIssue TrackingVendor Advisory

News mentions

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