---
cve: "CVE-2026-67345"
severity: "HIGH"
cvss: 8.5
epss: "0.3%"
vendor: "dromara"
kev: false
exploited: false
published: "2026-07-30 15:16:35"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-23T07:37:31+02:00"
---

# CVE-2026-67345

> 8.5 HIGH · 🧪 PoC

## Beschreibung

MaxKey through 4.1.12, fixed in commit ddbb72f, contains an insufficient redirect URI validation vulnerability in DefaultRedirectResolver.hostMatches() that allows remote attackers to hijack OAuth 2.0 authorization codes by supplying a crafted redirect_uri whose hostname suffix matches a registered URI without proper dot-boundary anchoring. Attackers who control a domain ending with the registered redirect URI hostname can social-engineer victims into clicking a crafted authorization URL, causing the authorization code to be issued to the attacker-controlled URI and exchanged for an access token granting access to the victim's identity.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 3a3a5c7657d0034fe6cf8a96d469bc2828d70072 (Commit)
- ddbb72fb24ab8e66aa422fb14b1177330bcffb45 (Commit)

## Referenzen

- <https://github.com/dromara/MaxKey/issues/269>
- <https://github.com/dromara/MaxKey/commit/ddbb72fb24ab8e66aa422fb14b1177330bcffb45>
- <https://www.vulncheck.com/advisories/maxkey-defaultredirectresolver-oauth-authorization-code-theft>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-67345) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_