QwikSec

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CVE

CWE

Training

CVE-2026-39935

Published: Apr 7, 2026

Modified: Apr 8, 2026

PUBLISHED

Description

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.

Vendor	Product	Versions
The Wikimedia Foundation	Mediawiki - CampaignEvents Extension	affected `1.43` affected `1.44` affected `1.45` affected `0 - < 1.43`

Weaknesses (CWE)

References

https://phabricator.wikimedia.org/T418254

https://gerrit.wikimedia.org/r/c/1249320

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