CVE-2026-15611

Unverified email-based SSO account linking

Critical · published July 23, 2026

CVSS v3.1
9.1
EPSS
0%
Percentile
40.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00482 · 40.7th percentile
Published
2026-07-23T15:45Z
EPSS history
Timeline
  • 23 JUL 15:45Z
    Unverified email-based SSO account linking
    cvelistv5