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VULNERABILITIES

CVE-2026-39839 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.1 MEDIUMVector: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

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URLSource(s)Tag(s)
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1237957 wikimedia-foundationPatch
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1237977 wikimedia-foundationPatch
https://phabricator.wikimedia.org/T416271 wikimedia-foundationExploitIssue TrackingVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)wikimedia-foundation

Affected Products

ProductVersions
mediawiki cargo
< 3.8.7

CPE

  • cpe:2.3:a:mediawiki:cargo:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-39839
NVD Published Date:
Apr 7, 2026
NVD Last Modified:
Jul 24, 2026
Source:
wikimedia-foundation
CVE-2026-39839 Details - Not Deferred