PT-2026-98241 · Mediawiki · Embedvideo Extension

CVE-2026-57440

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Published

2026-09-24

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Updated

2026-09-29

CVSS v3.1

7.5

High

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Name of the Vulnerable Software and Affected Versions EmbedVideo Extension versions prior to 4.1.0
Description When the $wgEmbedVideoRequireConsent variable is disabled, video URLs are passed into an iframe src attribute without proper sanitization. This allows an attacker to use a malformed URL or ID to escape the src attribute using double quotes, leading to HTML and JavaScript injection.
Recommendations Update to version 4.1.0.

Exploit

Fix

XSS

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Weakness Enumeration

CWE-79CWE-80

Related Identifiers

CVE-2026-57440
GHSA-V65J-HFF3-753C

Affected Products

Embedvideo Extension