CVE-2026-15617

critical · 9.1

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

9.1

CVSS

0.4%

EPSS (exploit prob.)

30th

EPSS percentile

2026-07-23

Published

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

Weaknesses

CWE-178

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-15617