CVE-2026-39838EPSS p37.3%

CVE-2026-39838CVE-2026-39838

Description

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Wikimedia Foundation MediaWiki - ProofreadPage Extension allows XSS Targeting Non-Script Elements. The issue has been remediated on the `master` branch, and in the release branches for MediaWiki versions 1.43, 1.44, and 1.45.

Scoring

EPSS0.45% probability of exploitation · percentile 37.3% · 2026-10-06T12:00:23Z
Last modified2026-07-21
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.