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OpenAdvisories
Medium · 6.1 CVE-2026-103051 EUVD-2026-89504GHSA-pvqw-26jw-x4g6

Stored i18n XSSs in CentralNotice

Published Sep 29, 2026 · Updated Sep 30, 2026 · Assigned by wikimedia-foundation

Description

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - CentralNotice extension allows Stored XSS.

This issue affects Mediawiki - CentralNotice extension: before 1.46.1, 1.45.5, 1.43.10.

Affected products

VendorProductAffectedFixed
The Wikimedia Foundation Mediawiki - CentralNotice extension < 1.46.1, 1.45.5, 1.43.10 1.46.1, 1.45.5, 1.43.10

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Ubuntu 26.10 mediawiki No fix yet —
Ubuntu 26.04 LTS mediawiki No fix yet —
Ubuntu 18.04 LTS mediawiki No fix yet —
Show 3 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 24.04 LTS mediawiki No fix yet —
Ubuntu Pro 22.04 LTS mediawiki No fix yet —
Ubuntu Pro 20.04 LTS mediawiki No fix yet —

References