8.1High
CVE-2026-67345MaxKey 4.1.12 DefaultRedirectResolver OAuth Authorization Code Theft
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.
Weakness (CWE):
CWE-183
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
References and patches
- Researcher Disclosure technical-descriptionexploitissue-tracking
- Patch Commit patch
- https://www.vulncheck.com/advisories/maxkey-defaultredirectresolver-oauth-authorization-code-theft third-party-advisory