---
cve: "CVE-2026-71573"
severity: "MEDIUM"
cvss: 6.9
epss: "34%"
vendor: "Joomla! Project"
kev: false
exploited: false
published: "2026-08-18 17:17:02"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T06:00:56+02:00"
---

# CVE-2026-71573

> 6.9 MEDIUM

## Beschreibung

Joomla! Core - [20260802] - Improper CORS origin validation in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2 - An improper implementation prevented configured CORS origins from being properly validated in CORS requests.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- e08f97c45440266d7b51bcf1c0739e8f135bab0b (Commit)
- 0f2d4de4729eb951e0878fec98c7990da07915b2 (Commit)

## Referenzen

- <https://www.joomla.org/>
- <https://developer.joomla.org/security-centre/20260802-core-improper-cors-origin-validation.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-71573) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_