CVE-2026-39839

6.1 MEDIUM

Published: April 07, 2026 Modified: April 15, 2026

Description

Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in Wikimedia Foundation Mediawiki - Cargo Extension allows Stored XSS.This issue affects Mediawiki - Cargo Extension: before 3.8.7.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1237957

Source: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc

Patch

https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1237977

Source: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc

Patch

https://phabricator.wikimedia.org/T416271

Source: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc

Exploit Issue Tracking Vendor Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score

6.1 / 10.0

EPSS (Exploit Probability)

0.0%

8th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-80

Affected Vendors

mediawiki

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