p PatchFirst

CVE-2026-52854

CVE-2026-52854 · mediawiki/maps: Stored XSS through the overlays parameter in the display_map parser function

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

Maps is a MediaWiki extension that enables visualization of geographic data through dynamic embedded maps. Prior to version 12.1.3, the display_map parser function in the Leaflet service accepts attacker-controlled HTML in the overlays parameter, and resources/leaflet/jquery.leaflet.js uses the overlay name as a Leaflet layer-control label without escaping it. A wiki user with the edit permission can store malicious wikitext that causes script execution when another user previews or views the affected map. The script executes in the viewing user's browser session and can access data or perform actions available to that user. This issue is fixed in version 12.1.3.

CVSS 8.6 · High · EPSS 0.6% · Fix available

Published
Updated

Stack: system · php

Affected products and versions

  • maps

    Versions
    • < 12.1.3: Affected

    No fix published

  • mediawiki/maps Packagist

    Versions
    • 10.0.0
    • 10.1.0
    • 10.1.1
    • 10.1.2
    • 10.2.0
    • 10.3.0
    • 11.0.0
    • 11.0.1
    • 12.0.0
    • 12.1.0
    • 12.1.1
    • 12.1.2
    • 3.0
    • 3.0-RC2
    • 3.0.1
    • 3.1
    • 3.2.0
    • 3.2.1
    • 3.2.2
    • 3.2.3
    • 3.2.4
    • 3.3.0
    • 3.4.0
    • 3.4.1
    • 3.5.0
    • 3.6.0
    • 3.7.0
    • 3.8.0
    • 3.8.1
    • 3.8.2
    • 4.0.0
    • 4.0.0-RC1
    • 4.0.1
    • 4.0.2
    • 4.0.3
    • 4.0.4
    • 4.0.5
    • 4.1.0
    • 4.2.0
    • 4.2.1
    • 4.3.0
    • 4.4.0
    • 5.0.0
    • 5.0.1
    • 5.0.2
    • 5.1.0
    • 5.2.0
    • 5.3.0
    • 5.4.0
    • 5.5.0
    • 5.5.1
    • 5.5.2
    • 5.5.3
    • 5.5.4
    • 5.5.5
    • 5.6.0
    • 6.0.0
    • 6.0.1
    • 6.0.2
    • 6.0.3
    • 6.0.4
    • 6.1.0
    • 6.2.0
    • 6.2.1
    • 6.2.2
    • 6.3.0
    • 7.0.0
    • 7.1.0
    • 7.10.0
    • 7.11.0
    • 7.12.0
    • 7.12.1
    • 7.12.2
    • 7.13.0
    • 7.14.0
    • 7.15.0
    • 7.15.1
    • 7.15.2
    • 7.15.3
    • 7.15.4
    • 7.15.5
    • 7.15.6
    • 7.16.0
    • 7.17.0
    • 7.17.1
    • 7.17.2
    • 7.18.0
    • 7.19.0
    • 7.2.0
    • 7.20.0
    • 7.20.1
    • 7.3.0
    • 7.3.1
    • 7.3.2
    • 7.3.3
    • 7.4.0
    • 7.4.1
    • 7.5.0
    • 7.6.0
    • 7.7.0
    • 7.8.0
    • 7.8.1
    • 7.8.2
    • 7.8.3
    • 7.9.0
    • 8.0.0
    • 9.0.0
    • 9.0.1
    • 9.0.2
    • 9.0.3
    • 9.0.4
    • 9.0.5
    • 9.0.6
    • 9.0.7
    Affected ranges
    • ECOSYSTEM: < 12.1.3

    Update to 12.1.3

  • mediawiki Ubuntu:18.04:LTS

    Versions
    • 1:1.27.3-1
    • 1:1.27.4-1
    • 1:1.27.4-2
    • 1:1.27.4-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mediawiki Ubuntu:Pro:20.04:LTS

    Versions
    • 1:1.31.2-1ubuntu1
    • 1:1.31.5-1
    • 1:1.31.5-1ubuntu1
    • 1:1.31.5-2
    • 1:1.31.5-3
    • 1:1.31.5-3ubuntu1
    • 1:1.31.6-1
    • 1:1.31.7-1
    • 1:1.31.7-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mediawiki Ubuntu:Pro:22.04:LTS

    Versions
    • 1:1.35.3-1
    • 1:1.35.4-1
    • 1:1.35.5-1
    • 1:1.35.5-1ubuntu1
    • 1:1.35.5-1ubuntu2
    • 1:1.35.5-1ubuntu3
    • 1:1.35.6-1
    • 1:1.35.6-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mediawiki Ubuntu:Pro:24.04:LTS

    Versions
    • 1:1.39.4-2
    • 1:1.39.5-1
    • 1:1.39.6-1
    • 1:1.39.7-1
    • 1:1.39.7-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mediawiki Ubuntu:26.10

    Versions
    • 1:1.43.8+dfsg-2
    • 1:1.43.9+dfsg-1
    • 1:1.43.9+dfsg-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mediawiki Ubuntu:26.04:LTS

    Versions
    • 1:1.43.3+dfsg-1
    • 1:1.43.5+dfsg-1
    • 1:1.43.6+dfsg-2
    • 1:1.43.8+dfsg-1
    • 1:1.43.8+dfsg-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

Check your server →