CVE-2024-23171 Cross-site scripting in n/a

Medium 5.4 Published Updated

Cross-site scripting in MediaWiki CampaignEvents extension allows attackers to inject scripts via language settings, 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
Available

What is CVE-2024-23171?

CVE-2024-23171 is a medium-severity cross-site scripting vulnerability in Mediawiki Mediawiki, published on 12 Jan 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

An issue was discovered in the CampaignEvents extension in MediaWiki before 1.35.14, 1.36.x through 1.39.x before 1.39.6, and 1.40.x before 1.40.2. The Special:EventDetails page allows XSS via the x-xss language setting for internationalization (i18n).

Weakness: CWE-79

Which versions are affected by CVE-2024-23171?

1 open source package ship an affected version, including mediawiki. It affects 1 product.

PackageAffectedFixed in
mediawiki BitnamiAll versions1.41.1

Products include Mediawiki Mediawiki.

How do I fix CVE-2024-23171?

Upgrade mediawiki to 1.41.1 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-2024-23171 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-23171 exists.

All Mediawiki Mediawiki vulnerabilities

Sources

Also known as BIT-mediawiki-2024-23171, GHSA-46pr-fphr-qq4h.

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