CVE-2026-39841

Stored XSS through list fields on Cargo's page values and Special:CargoTables

6.3 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: Passive

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: None

Exploit likelihood

0.16%Up 0.1 points since Apr 8, 2026

What each source reports

CVE List Score used 6.3

Stored XSS through list fields on Cargo's page values and Special:CargoTables

Record: CVE-2026-39841
CVSS 4.0: 6.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Weakness: CWE-80
Updated: 2026-11-02

EUVDEUVD-2026-19931 6.3

Record: EUVD-2026-19931
CVSS 4.0: 6.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-2mg7-w9r8-29mw 6.3

Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in...

Record: GHSA-2mg7-w9r8-29mw
CVSS 4.0: 6.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79, CWE-80
Updated: 2026-11-02

NVD 6.3

Record: CVE-2026-39841
CVSS 4.0: 6.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-80, CWE-79
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-39841 is a medium vulnerability (CVSS 6.3) in Mediawiki Cargo, published April 7, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.16%, the 5th percentile. No source names a fixed version.