CVE-2026-113682

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.

CVSS v3 7.4 HIGH

7.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/networknt/light-4j/blob/2.3.7/basic-auth/src/main/java/com/networknt/basicauth/BasicAuthHandler.java#L189-L200
https://github.com/networknt/light-4j/blob/2.3.7/ldap-util/src/main/java/com/networknt/ldap/LdapUtil.java#L152-L173
https://github.com/networknt/light-4j/commit/54743badb34260b76ed131d8b6a4f60210cc3673
https://github.com/networknt/light-4j/issues/2804
https://github.com/networknt/light-4j/pull/2805
https://github.com/networknt/light-4j/releases/tag/2.4.0
https://www.vulncheck.com/advisories/networknt-light-4j-2.1.5-before-2.4.0-authentication-bypass-via-empty-ldap-password

Configurations

No configuration.

History

20 Oct 2026, 16:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-20 16:17

Updated : 2026-10-23 14:17

NVD link : CVE-2026-113682

Mitre link : CVE-2026-113682

CVE.ORG link : CVE-2026-113682

JSON object : View

Products Affected

No product.

CWE

CWE-287

Improper Authentication

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