CVE-2026-15612 LOIDC nonce validation bypass

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

CVE-2026-15614 IdP-initiated SAML sessions not reliably invalidated (replay)

Logto silently fails to delete IdP-initiated SAML sessions, enabling session replay and reuse within the session’s validity window...

CVE-2026-15617 Principal/domain lookup without case normalization

Logto performs principal lookup without normalizing email and identifier strings, enabling principal collision and unauthorized account access via case- or Unicode-different identities...