Cross-Site Scripting Vulnerability in MediaWiki Cargo Extension
CVE-2026-96877

6.9MEDIUM

Key Information:

Vendor

The Wikimedia Foundation

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

What is CVE-2026-96877?

An improper neutralization of input during web page generation in the MediaWiki Cargo extension has been identified, leading to a reflected cross-site scripting (XSS) vulnerability. This flaw could allow attackers to inject malicious scripts into web pages viewed by users, potentially compromising sensitive information or executing unauthorized actions. The issue affects versions up to 3.9.4, making it crucial for users to evaluate their implementations and apply recommended mitigations.

Affected Version(s)

Mediawiki - Cargo extension 0 <= 3.9.4

References

https://phabricator.wikimedia.org/T434977

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

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