# CVE-2026-107370: Improper Request Handling for Active Directory Logins in auth0-lock

> CVE-2026-107370: Improper Request Handling for Active Directory Logins in auth0-lock. CVSS 5.3 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-107370
Last updated: 2026-10-15T20:38:04Z

- Published: 2026-10-13 20:08 UTC · Updated: 2026-10-15 20:38 UTC · Assigner: Okta
- CVSS: 5.3 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
- EPSS: 0.28%, 20th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-532, CWE-598

## 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.

## Affected vendors and products

- Auth0: auth0-lock

## Tracked companies

- [Auth0](https://rewindex.com/company/auth0.md)
- [Okta](https://rewindex.com/company/okta.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-107370)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-107370)
- [https://github.com/auth0/lock/security/advisories/GHSA-mp8m-wcxp-w648](https://github.com/auth0/lock/security/advisories/GHSA-mp8m-wcxp-w648)
- [https://trust.okta.com/security-advisories/improper-request-handling-for-active-directory-logins-in-auth0-lock-cve-2026-107370](https://trust.okta.com/security-advisories/improper-request-handling-for-active-directory-logins-in-auth0-lock-cve-2026-107370)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-107370 · Markdown: https://rewindex.com/cve/CVE-2026-107370.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-107370 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:13:38.091Z