CVE-2026-15617

UNKNOWN 0.0

Principal/domain lookup without case normalization

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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

Vendor	logto
Product	logto
Published	Jul 23, 2026

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Affected Versions

Logto / Logto

1.10.1 ≤ 1.37.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/logto-io/logto/blob/ea3ede35028dfd0bbb6d7b239623ce0e7f6cdff8/packages/core/src/libraries/verification-helpers/single-sign-on-guard.ts#L23-L33