CVE-2026-113682 Details
Description
Networknt light-4j from 2.1.5 before 2.4.0 contains an authentication bypass vulnerability in BasicAuthHandler that allows unauthenticated attackers to log in as LDAP/AD-delegated users. Attackers can send a Basic Authorization header with a known username and empty password, triggering an unauthenticated LDAP bind that is accepted as successful authentication.
A vulnerability allowing authentication bypass has been identified in Networknt Light-4j versions 2.1.5 prior to 2.4.0. The issue resides in the BasicAuthHandler component, where unauthenticated attackers can log in as LDAP or Active Directory-delegated users. This is achieved by sending a Basic Authorization header containing a known username and an empty password, which triggers an unauthenticated LDAP bind. The bind is incorrectly accepted as successful authentication, as LDAP allows such a bind with an empty password.
Users can update to Networknt Light-4j version 2.4.0 or later, where this vulnerability has been fixed. Instructions for updating can be found in the Light-4j release notes.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 20, 2026CISA-ADP
Assessed Oct 23, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-287 | Improper Authentication | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Networknt light-4j | >= 2.1.5, < 2.4.0 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 23, 2026 | CVE Modified | CISA-ADP |
| Oct 20, 2026 | New CVE Received | [email protected] |