CVE-2026-103585 attacker-controlled javascript license URL via XSS
Cross-site scripting in MediaWiki MediaSearch allows attackers to inject malicious JavaScript via license URLs, potentially compromising user sessions.
- 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-2026-103585?
CVE-2026-103585 is a low-severity cross-site scripting vulnerability in The Wikimedia Foundation MediaWiki MediaSearch extension, published on 30 Sep 2026. 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 neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki MediaSearch extension allows Cross-Site Scripting (XSS).
This issue affects MediaWiki MediaSearch extension: 1.46, 1.45, and 1.43.
Weakness: CWE-80
Which versions are affected by CVE-2026-103585?
How do I fix CVE-2026-103585?
No fix has been published for CVE-2026-103585 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-2026-103585 being exploited?
There is no known exploitation of CVE-2026-103585 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-q32v-6xg8-872f.