CVE-2025-3469

i18n XSS vulnerability in HTMLMultiSelectField when sections are used

N/A

Published: April 10, 2025 at 06:28 PM UTC

Updated: June 17, 2026 at 09:20 AM UTC

1 product affected across 1 vendorMediaWiki

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Severity

N/A

Exploit prediction

EPSS 0.4%

SSVC

No known exploit

Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/htmlform/fields/HTMLMultiSelectField.Php. This issue affects MediaWiki: before 1.39.12, 1.42.6, 1.43.1.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

MediaWiki · Wikimedia

60%

v < 1.39.12, 1.42.6, 1.43.1

Affected range stops below 1.39.12, 1.42.6, 1.43.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Source: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc

https://phabricator.wikimedia.org/T358689

Source: af854a3a-2127-422b-91ae-364da2661108

https://lists.debian.org/debian-lts-announce/2025/07/msg00012.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

Quick Info

StatusDEFERRED

CWE

CWE-79

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