---
cve: "CVE-2026-39840"
severity: "MEDIUM"
cvss: 5.1
epss: "16%"
vendor: "Wikimedia Foundation"
kev: false
exploited: false
published: "2026-04-07 20:16:33"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-14T06:42:01+02:00"
---

# CVE-2026-39840

> 5.1 MEDIUM

## Beschreibung

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Wikimedia Foundation Mediawiki - Cargo Extension allows XSS Targeting Non-Script Elements.This issue affects Mediawiki - Cargo Extension: before 3.8.7.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |

## Referenzen

- <https://phabricator.wikimedia.org/T416368>
- <https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1237966>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-39840) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_