CVE-2023-37302 MediaWiki Cross-site Scripting vulnerability
Cross-site scripting vulnerability in MediaWiki Wikibase allows attackers to inject malicious scripts via crafted badge titles, potentially leading to session hijacking or code execution.
- 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
- Available
What is CVE-2023-37302?
CVE-2023-37302 is a medium-severity cross-site scripting vulnerability in Mediawiki Mediawiki, published on 30 Jun 2023. 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
An issue was discovered in SiteLinksView.php in Wikibase in MediaWiki through 1.39.3. There is XSS via a crafted badge title attribute. This is also related to lack of escaping in wbTemplate (from resources/wikibase/templates.js) for quotes (which can be in a title attribute).
Weakness: CWE-79
Which versions are affected by CVE-2023-37302?
3 open source packages ship an affected version, including mediawiki and wikibase/wikibase. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mediawiki Bitnami | All versions | 1.39.4 |
wikibase/wikibase Packagist | All versions to 1.39.3 | None |
wikibase/wikibase Packagist | All versions to 1.39.3 | None |
Products include Mediawiki Mediawiki.
How do I fix CVE-2023-37302?
Upgrade mediawiki to 1.39.4 or later.
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-2023-37302 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-37302 exists.
Other vulnerabilities in Mediawiki Mediawiki
Sources
Also known as BIT-mediawiki-2023-37302, GHSA-fmrf-p77g-vv5c, UBUNTU-CVE-2023-37302.