---
cve: "CVE-2026-100380"
severity: "MEDIUM"
cvss: 5.3
epss: "2.2%"
vendor: "Wikimedia Foundation"
kev: false
exploited: false
published: "2026-09-25 21:17:22"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-27T04:03:50+02:00"
---

# CVE-2026-100380

> 5.3 MEDIUM

## Beschreibung

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Wikibase Extension allows Cross-Site Scripting (XSS).

This issue affects Mediawiki - Wikibase Extension: from * before 1.46.1, 1.45.5, 1.43.10.

## CVSS-Vektor

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

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

## Referenzen

- <https://phabricator.wikimedia.org/T434549>
- <https://gerrit.wikimedia.org/r/q/I7407f9748d72161ce25ad0ba2446869bb1776857>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-100380) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_