CVE-2025-67484 Action API xslt option allows JavaScript execution by administrators who are not interface administrators

What is CVE-2025-67484?

CVE-2025-67484 is a cross-site scripting vulnerability in Mediawiki Mediawiki, published on 3 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Api/ApiFormatXml.Php.

This issue affects MediaWiki: from * before 1.39.16, 1.43.6, 1.44.3, 1.45.1.

Weakness: CWE-20

Which versions are affected by CVE-2025-67484?

It affects 1 product.

Products include Mediawiki Mediawiki.

How do I fix CVE-2025-67484?

Upgrade to a fixed version.

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-2025-67484 being exploited?

There is no known exploitation of CVE-2025-67484 in the wild and no public exploit code.

Other vulnerabilities in Mediawiki Mediawiki

• CVE-2023-37303 Denial of service in n/a Critical 9.8
• CVE-2022-29904 SQL injection in n/a Critical 9.8
• CVE-2022-29906 Missing authorization in n/a Critical 9.8
• CVE-2022-28205 Business logic in n/a Critical 9.8
• CVE-2022-28206 Missing authorization in n/a Critical 9.8

All Mediawiki Mediawiki vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2025-67484, GHSA-fq4p-ghcx-qxxg, UBUNTU-CVE-2025-67484.