CVE-2026-39840
MediumCVSS 6.1Exploitation Probability (EPSS)
Low risk5th percentile - higher than 5% of all known CVEs
Summary
XSS vulnerability in the Cargo extension for MediaWiki, targeting non-script elements. Improper input neutralization during page generation allows injection of malicious code.
Risk Assessment
An attacker can modify page content, steal data, or perform actions on behalf of the victim.
Recommendation
Update the Cargo extension to version 3.8.7 or later.
Other vulnerabilities in MediaWiki - Cargo Extension
See all- CVE-2026-96874Low
The Mediawiki - Cargo extension through version 3.9.4 contains a Stored XSS vulnerability due to improper input neutralization during web page generation.
- CVE-2026-14363Critical
An SQL injection vulnerability in the Cargo extension for MediaWiki allows an attacker to inject malicious SQL code. The issue affects versions before 1.43.9, 1.44.6, and 1.45.4.
- CVE-2026-58521Critical
A SQL injection vulnerability was found in the Cargo extension for MediaWiki due to improper neutralization of special elements in SQL commands. The issue affects versions before 1.43.9, 1.44.6, and 1.45.4.
- CVE-2026-58519Medium
A stored cross-site scripting (XSS) vulnerability has been found in the Cargo extension for MediaWiki. The flaw is caused by improper input neutralization during web page generation. All versions before 3.9.1 are affected.
- CVE-2026-39841Medium
Stored XSS vulnerability in the Cargo extension for MediaWiki. Improper neutralization of script-related HTML tags allows an attacker to inject malicious JavaScript code that executes whenever the page is viewed.
- CVE-2026-39839Medium
The Cargo extension for MediaWiki before version 3.8.7 is vulnerable to stored XSS due to improper neutralization of script-related HTML tags. Attackers can inject malicious scripts that execute when a page is viewed.
- CVE-2026-39837Medium
The Cargo extension for MediaWiki is vulnerable to Stored Cross-Site Scripting (XSS) due to improper neutralization of script-related HTML tags.
Original NVD description (English source)
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Wikimedia Foundation Mediawiki - Cargo Extension allows XSS Targeting Non-Script Elements.This issue affects Mediawiki - Cargo Extension: before 3.8.7.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS