CVE-2026-39840

UNKNOWN 0.0

CSS injection in multiple Cargo display formats

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	wikimedia foundation
Product	mediawiki - cargo extension
Published	Apr 7, 2026
Last Updated	Apr 7, 2026

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Affected Versions

Wikimedia Foundation / Mediawiki - Cargo Extension

0 < 3.8.7

References

NVD ↗ CVE.org ↗ EPSS Data ↗

phabricator.wikimedia.org: https://phabricator.wikimedia.org/T416368 gerrit.wikimedia.org: https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1237966

Credits

SomeRandomDeveloper Yaron Koren