CVE-2026-113682
Networknt light-4j 2.1.5 before 2.4.0 Authentication Bypass via Empty LDAP Password
CVSS Score
7.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-287 |
| Vendor | networknt |
| Product | light-4j |
| Published | Oct 20, 2026 |
Stay Ahead of the Next One
Get instant alerts for networknt light-4j
Be the first to know when new high vulnerabilities affecting networknt light-4j are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
networknt / light-4j
2.1.5 < 2.4.0
References
github.com: https://github.com/networknt/light-4j/issues/2804 github.com: https://github.com/networknt/light-4j/pull/2805 github.com: https://github.com/networknt/light-4j/commit/54743badb34260b76ed131d8b6a4f60210cc3673 github.com: https://github.com/networknt/light-4j/releases/tag/2.4.0 github.com: https://github.com/networknt/light-4j/blob/2.3.7/basic-auth/src/main/java/com/networknt/basicauth/BasicAuthHandler.java#L189-L200 github.com: https://github.com/networknt/light-4j/blob/2.3.7/ldap-util/src/main/java/com/networknt/ldap/LdapUtil.java#L152-L173 vulncheck.com: https://www.vulncheck.com/advisories/networknt-light-4j-2.1.5-before-2.4.0-authentication-bypass-via-empty-ldap-password
Credits
kta1kri