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CVE-2026-57440

CVE-2026-57440 · Mediawiki EmbedVideo Extension has stored XSS via malformed src url with $wgEmbedVideoRequireConsent disabled

This page contains facts from public vulnerability sources. Check the original advisory before updating.

The EmbedVideo Extension is a MediaWiki extension which adds a parser function called #ev and various parser tags for embedding video clips from various video sharing services. Prior to 4.1.0, with $wgEmbedVideoRequireConsent disabled (not the default), the urls for videos are passed into an iframe src attribute without sanitization. When given a malformed url or id, the src attribute can be escaped via double quotes, allowing for html/javascript injection. Version 4.1.0 contains a patch.

CVSS 7.5 · High · EPSS 0.3% · Fix available

Published
Updated

Stack: php

Affected products and versions

  • mediawiki-extensions-embedvideo

    Versions
    • < 4.1.0: Affected

    No fix published

  • starcitizenwiki/embedvideo Packagist

    Versions
    • 3.0.0
    • 3.0.1
    • 3.0.2
    • 3.0.3
    • 3.0.4
    • 3.0.5
    • 3.0.6
    • 3.0.7
    • 3.0.8
    • 3.0.9
    • 3.1.0
    • 3.2.0
    • 3.2.1
    • 3.2.2
    • 3.2.3
    • 3.2.4
    • 3.2.5
    • 3.2.6
    • 3.2.7
    • 3.2.8
    • 3.3.0
    • 3.4.0
    • 3.4.1
    • 3.4.2
    • 3.4.3
    • 4.0.0
    Affected ranges
    • ECOSYSTEM: < 4.1.0

    Update to 4.1.0

Original sources

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