Cross-Site Scripting Vulnerability in Mediawiki Cargo Extension
CVE-2026-96874

2.3LOW

Key Information:

Vendor

The Wikimedia Foundation

Status
Mediawiki - Cargo Extension
Vendor
CVE Published:
25 September 2026

What is CVE-2026-96874?

The Cargo extension of Mediawiki is affected by a vulnerability that allows for improper handling of input during web page generation, which may lead to stored cross-site scripting (XSS). This flaw can enable attackers to inject malicious scripts into web pages viewed by other users, potentially compromising user data and security. Users utilizing versions up to 3.9.4 should take immediate steps to mitigate this vulnerability by applying patches and updating to the latest version.

Affected Version(s)

Mediawiki - Cargo extension 0 <= 3.9.4

References

https://gerrit.wikimedia.org/g/mediawiki/extensions/Cargo
https://phabricator.wikimedia.org/T435207

CVSS V4

Score:
2.3
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

bombobombone https://bombobombone.github.io/
.