Unrated severityNVD Advisory· Published Jul 23, 2026· Updated Jul 27, 2026
Unverified email-based SSO account linking
CVE-2026-15611
Description
Logto allows unverified email-based SSO account linking, enabling an attacker to register an identity at a permissive IdP using a victim’s email and gain unauthorized access to the victim’s account.
Affected products
1Patches
Vulnerability mechanics
References
2- github.com/logto-io/logto/blob/ea3ede35028dfd0bbb6d7b239623ce0e7f6cdff8/packages/core/src/libraries/verification-helpers/single-sign-on.tsmitre
- github.com/logto-io/logto/blob/ea3ede35028dfd0bbb6d7b239623ce0e7f6cdff8/packages/core/src/routes/experience/classes/verifications/enterprise-sso-verification.tsmitre
News mentions
1- ⚡ Weekly Recap: Rogue AI Agents, Check Point Exploit, Slopsquatting, ClickFix Lures and MoreThe Hacker News · Jul 27, 2026