CVE-2025-32073 System message XSS in HTMLTags
An attacker can inject malicious scripts via system messages in MediaWiki HTML Tags, potentially compromising user sessions or executing code.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-32073?
CVE-2025-32073 is a medium-severity cross-site scripting vulnerability in The Wikimedia Foundation Mediawiki - HTML Tags, published on 11 Apr 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Improper Input Validation vulnerability in The Wikimedia Foundation Mediawiki - HTML Tags allows Cross-Site Scripting (XSS).This issue affects Mediawiki - HTML Tags: from 1.39 through 1.43.
Weakness: CWE-20
Which versions are affected by CVE-2025-32073?
How do I fix CVE-2025-32073?
No fix has been published for CVE-2025-32073 yet. Limit exposure of the affected software until one is available.
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-2025-32073 being exploited?
There is no known exploitation of CVE-2025-32073 in the wild and no public exploit code.
Sources
Also known as GHSA-426f-2r7q-j2xm.