CVE-2026-15612

LOIDC nonce validation bypass

Critical · published July 23, 2026

CVSS v3.1
9.1
EPSS
0%
Percentile
14.6
In the wild
Unconfirmed
What it is

Logto bypasses OIDC nonce validation when the nonce claim is absent from the id_token, enabling replay of authentication tokens and weakening session-binding.

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
0.00243 · 14.6th percentile
Published
2026-07-23T15:45Z
EPSS history
Timeline
  • 23 JUL 15:45Z
    LOIDC nonce validation bypass
    cvelistv5