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Vulnerability record · CVE-2026-15612 · published 23 July 2026

CVE-2026-15612: Insufficient verification of data authenticity vulnerability

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

9.1 CVSS 3.1 Critical EPSS 0.24% · top 86.1% CWE-345 · Insufficient verification of data authenticity Deferred
9.1CVSS 3.1 base score
0.24%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
27 Jul 2026Last modified by NVD

Description

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

LinkTags
https://github.com/logto-io/logto/blob/ea3ede35028dfd0bbb6d7b239623ce0e7f6cdff8/packages/core/src/sso/OidcConnector/util

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-15612), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.