CVE-2025-3469 i18n XSS vulnerability in HTMLMultiSelectField when sections are used
An XSS vulnerability in MediaWiki's HTMLMultiSelectField allows attackers to inject scripts, potentially leading to session hijacking or malicious actions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-3469?
CVE-2025-3469 is a cross-site scripting vulnerability in Wikimedia Foundation MediaWiki, published on 10 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2025-3469?
1 open source package ship an affected version, including mediawiki.
| Package | Affected | Fixed in |
|---|---|---|
mediawiki Bitnami | All versions | 1.43.1 |
How do I fix CVE-2025-3469?
Upgrade mediawiki to 1.43.1 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-3469 being exploited?
There is no known exploitation of CVE-2025-3469 in the wild and no public exploit code.
Sources
Also known as BIT-mediawiki-2025-3469, DEBIAN-CVE-2025-3469, GHSA-7jc7-7vhf-f7fg, UBUNTU-CVE-2025-3469.