{"id":"CVE-2026-113682","published":"2026-10-20T16:17:13.210","lastModified":"2026-10-23T14:17:32.900","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.","cvssScore":7.4,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","cwes":["CWE-287"],"vendors":[],"products":[],"references":[{"url":"https://github.com/networknt/light-4j/blob/2.3.7/basic-auth/src/main/java/com/networknt/basicauth/BasicAuthHandler.java#L189-L200","tags":[]},{"url":"https://github.com/networknt/light-4j/blob/2.3.7/ldap-util/src/main/java/com/networknt/ldap/LdapUtil.java#L152-L173","tags":[]},{"url":"https://github.com/networknt/light-4j/commit/54743badb34260b76ed131d8b6a4f60210cc3673","tags":[]},{"url":"https://github.com/networknt/light-4j/issues/2804","tags":[]},{"url":"https://github.com/networknt/light-4j/pull/2805","tags":[]},{"url":"https://github.com/networknt/light-4j/releases/tag/2.4.0","tags":[]},{"url":"https://www.vulncheck.com/advisories/networknt-light-4j-2.1.5-before-2.4.0-authentication-bypass-via-empty-ldap-password","tags":[]}],"exploitRefs":[{"url":"https://github.com/networknt/light-4j/blob/2.3.7/basic-auth/src/main/java/com/networknt/basicauth/BasicAuthHandler.java#L189-L200","tags":[]},{"url":"https://github.com/networknt/light-4j/blob/2.3.7/ldap-util/src/main/java/com/networknt/ldap/LdapUtil.java#L152-L173","tags":[]},{"url":"https://github.com/networknt/light-4j/commit/54743badb34260b76ed131d8b6a4f60210cc3673","tags":[]},{"url":"https://github.com/networknt/light-4j/issues/2804","tags":[]},{"url":"https://github.com/networknt/light-4j/pull/2805","tags":[]},{"url":"https://github.com/networknt/light-4j/releases/tag/2.4.0","tags":[]}],"hasPoc":true,"ai":null}