CVE-2026-107370 Improper Request Handling for Active Directory Logins in auth0-lock
Attackers can read sensitive credentials from URLs when Active Directory logins use domain-only usernames, exposing data in logs and history.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-107370?
CVE-2026-107370 is a medium-severity vulnerability in auth0-lock, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Which versions are affected by CVE-2026-107370?
How do I fix CVE-2026-107370?
No fix has been published for CVE-2026-107370 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-107370 being exploited?
There is no known exploitation of CVE-2026-107370 in the wild and no public exploit code.