Vulnerability DatabaseCVE-2026-39840
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CVE-2026-39840
Published:April 07, 2026
Updated:May 16, 2026
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.
Affected Packages
https://github.com/wikimedia/mediawiki-extensions-Cargo.git (GITHUB):
Affected version(s) >=0.5.1 <3.8.7
Fix Suggestion:
Update to version 3.8.7
Related Resources (2)
https://phabricator.wikimedia.org/T416368
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1237966
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CVSS v4
Base Score:
5.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-79
EPSS
Base Score:
0.03