# CVE-2026-67345

## Summary

- **CVE ID:** CVE-2026-67345
- **Severity:** HIGH
- **CVSS Score:** 8.5 (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)
- **CWE:** CWE-183
- **Published:** Jul 30, 2026
- **Last Modified:** Aug 14, 2026

## Description

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.

## Affected Products

- dromara — MaxKey (0)
- dromara — MaxKey (ddbb72fb24ab8e66aa422fb14b1177330bcffb45)

## References

- [CNA](https://github.com/dromara/MaxKey/issues/269)
- [CNA](https://github.com/dromara/MaxKey/commit/ddbb72fb24ab8e66aa422fb14b1177330bcffb45)
- [CNA](https://www.vulncheck.com/advisories/maxkey-defaultredirectresolver-oauth-authorization-code-theft)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.31%
- **EPSS Percentile:** 23.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._