CVE-2024-47845 CSS sanitizer used incorrectly, and is easily bypassed
Attackers can bypass CSS sanitization to inject malicious code, potentially leading to script execution or security bypasses in MediaWiki installations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-47845?
CVE-2024-47845 is a medium-severity cross-site scripting vulnerability in The Wikimedia Foundation Mediawiki - CSS Extension, published on 5 Oct 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Improper Encoding or Escaping of Output vulnerability in The Wikimedia Foundation Mediawiki - CSS Extension allows Code Injection.This issue affects Mediawiki - CSS Extension: from 1.39.X before 1.39.9, from 1.41.X before 1.41.3, from 1.42.X before 1.42.2.
Weakness: CWE-116
Which versions are affected by CVE-2024-47845?
It affects 1 product.
Products include Wikimedia Wikimedia-Extensions-Css.
How do I fix CVE-2024-47845?
No fix has been published for CVE-2024-47845 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-2024-47845 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-47845 exists.
Other vulnerabilities in The Wikimedia Foundation Mediawiki - CSS Extension
Sources
Also known as GHSA-rxh5-jm9f-fmwj.