CVE-2026-39839CWE-80

Stored XSS through URLs in Cargo's map format

Medium · published April 7, 2026

CVSS v4.0
6.3
EPSS
0%
Percentile
21.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.3 · MEDIUM
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
EPSS
0.00298 · 21.3th percentile
Weakness
CWE-80 · Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Published
2026-04-07T19:29Z
EPSS history
Timeline
  • 07 APR 19:29Z
    Stored XSS through URLs in Cargo's map format
    cvelistv5