CVE-2025-61655 Stored XSS through system messages in VisualEditor

None 0.0 Published 3 Feb 2026 Updated 3 Feb 2026

Attackers can inject malicious scripts via system messages in VisualEditor, potentially executing code or hijacking user accounts.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2025-61655?

CVE-2025-61655 is a cross-site scripting vulnerability in Wikimedia Foundation VisualEditor, published on 3 Feb 2026. An attacker needs administrator access to exploit it, 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 VisualEditor. This vulnerability is associated with program files includes/ApiVisualEditorEdit.Php, modules/ve-mw/init/targets/ve.Init.Mw.DesktopArticleTarget.Js, modules/ve-mw/ui/dialogs/ve.Ui.MWSaveDialog.Js.

This issue affects VisualEditor: from * before 1.39.14, 1.43.4, 1.44.1.

Weakness: CWE-79

Which versions are affected by CVE-2025-61655?

It affects 1 product.

Products include Mediawiki Visual Editor.

How do I fix CVE-2025-61655?

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-2025-61655 being exploited?

There is no known exploitation of CVE-2025-61655 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2025-61655, GHSA-5gh3-pm42-f6qp, UBUNTU-CVE-2025-61655.