Cross-Site Scripting Vulnerability in Mediawiki Cargo Extension
CVE-2026-96876

6.9MEDIUM

Key Information:

Vendor

The Wikimedia Foundation

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

What is CVE-2026-96876?

A cross-site scripting vulnerability exists in the Cargo extension for Mediawiki, enabling attackers to inject malicious scripts into webpages. Through an improper handling of input during page generation, this flaw can lead to reflected XSS attacks, posing significant risks to users' data and privacy. It is crucial for users of versions up to 3.9.4 to apply security measures and updates to mitigate potential exploitation.

Affected Version(s)

Mediawiki - Cargo extension 0 <= 3.9.4

References

https://phabricator.wikimedia.org/T435121

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
.