CVE-2025-10354 Reflected Cross-Site Scripting (XSS) in Semantic MediaWiki
Attackers can execute arbitrary JavaScript in victims' browsers via a malicious URL, potentially stealing session cookies or performing actions on their behalf.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-10354?
CVE-2025-10354 is a medium-severity cross-site scripting vulnerability in Semantic MediaWiki, published on 21 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Cross-Site Scripting (XSS) vulnerability reflected in Semantic MediaWiki. This vulnerability allows an attacker to execute JavaScript code in the victim's browser by sending them a malicious URL using the '/index.php/Speciaal:GefacetteerdZoeken' endpoint parameter. This vulnerability can be exploited to steal sensitive user data, such as session cookies, or to perform actions on behalf of the user.
Weakness: CWE-79
Which versions are affected by CVE-2025-10354?
How do I fix CVE-2025-10354?
No fix has been published for CVE-2025-10354 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-2025-10354 being exploited?
There is no known exploitation of CVE-2025-10354 in the wild and no public exploit code.
Sources
Also known as GHSA-p2jw-3hf7-269m.