by Kastro
Paper/Archive/CVE-2026-15616

CVE-2026-15616

Logto Logto — Local MFA not enforced during SSO sign-in

EPSS 0.5%CVSS 9.1
critical.is priorityof 100
36
CVSS 9.1 (ADP)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 44.8.448 × 209.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Logto does not enforce locally configured MFA during SSO authentication, allowing users to bypass second-factor requirements and grants unauthorized access.

Affected

ProductAffectedFixed inSource
Logto1.19.0 – 1.37.1–CNA

Scores by source

CISA ADP9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refgithub.com/logto-io/logto/blob/ea3ede35028dfd0bbb6d7b239623ce0e7f6cdff8/packages/core/src/routes/experience/classes/experience-interaction.ts#L538-L540