What is CVE-2026-107370?

CVE-2026-107370 is a medium-severity vulnerability in Auth0 Auth0-Lock, classified under Insertion of Sensitive Information into Log File. CVSS score: 5.3/10. Published 2026-10-13.

How severe is CVE-2026-107370?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Information disclosure in Auth0 Auth0-Lock

CVE-2026-107370

When a username for an Active Directory connection is a domain without a local part, the auth0-lock library initiates the authentication transaction with a GET request instead of a POST request. As a result, user-submitted form data is appended to the URL as query string parameters.

Published 2026-10-13 · last modified 2026-10-14.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Auth0 Auth0-Lock

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-107370?: CVE-2026-107370 is a medium-severity vulnerability in Auth0 Auth0-Lock, classified under Insertion of Sensitive Information into Log File. CVSS score: 5.3/10. Published 2026-10-13.
How severe is CVE-2026-107370?: Medium severity. CVSS v3 base score is 5.3 out of 10.