CVE-2026-39837 - Vulnerability Details - OpenCVE

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

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact High

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation poc

Automatable no

Technical Impact partial

No data.

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1237979
https://phabricator.wikimedia.org/T416402

History

Tue, 07 Apr 2026 21:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 07 Apr 2026 20:45:00 +0000

Type	Values Removed	Values Added
Description		Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in WikiWorks Mediawiki - Cargo Extension allows Stored XSS.This issue affects Mediawiki - Cargo Extension: before 3.8.7.
Title		Stored XSS through the dynamic table format in Cargo
Weaknesses		CWE-80
References		https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1237979 https://phabricator.wikimedia.org/T416402
Metrics		cvssV4_0 `{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: wikimedia-foundation

Published: 2026-04-07T19:47:18.207Z

Updated: 2026-04-07T20:42:42.016Z

Reserved: 2026-04-07T18:21:12.572Z

Link: CVE-2026-39837

Vulnrichment

Updated: 2026-04-07T20:38:58.303Z

NVD

Status : Received

Published: 2026-04-07T20:16:33.307

Modified: 2026-04-07T20:16:33.307

Link: CVE-2026-39837

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-80

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