Vulnerability record · CVE-2026-15615 · published 23 July 2026

CVE-2026-15615: Insufficient verification of data authenticity vulnerability

Logto omits validation of the SAML <Conditions> element, enabling attackers to strip time and audience restrictions and replay assertions indefinitely.

7.5 CVSS 3.1 High EPSS 0.19% · top 92.0% CWE-345 · Insufficient verification of data authenticity Deferred

7.5CVSS 3.1 base score

0.19%EPSS exploitation probability, 30 days

NoNot in CISA KEV

0Affected product versions listed by NVD

2References

27 Jul 2026Last modified by NVD

Description

Logto omits validation of the SAML <Conditions> element, enabling attackers to strip time and audience restrictions and replay assertions indefinitely.

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

References

Link	Tags
https://github.com/logto-io/logto/blob/ea3ede35028dfd0bbb6d7b239623ce0e7f6cdff8/packages/connectors/connector-saml/src/u
https://github.com/logto-io/logto/blob/ea3ede35028dfd0bbb6d7b239623ce0e7f6cdff8/packages/core/src/sso/SamlConnector/util

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

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Source: NIST National Vulnerability Database (record CVE-2026-15615), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.