{"id":"CVE-2026-113682","title":"Networknt light-4j 2.1.5 before 2.4.0 Authentication Bypass via Empty LDAP Password","summary":"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 wi…","severity":"high","cvss":7.4,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","cvssSource":"cna","cwe":["CWE-287"],"vendor":"networknt","product":"light-4j","affected":["light-4j >= 2.1.5 < 2.4.0"],"published":"2026-10-20","updated":"2026-10-20","sourceUpdated":"2026-10-20T15:40:42.500Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-113682","references":[{"url":"https://github.com/networknt/light-4j/issues/2804"},{"url":"https://github.com/networknt/light-4j/pull/2805"},{"url":"https://github.com/networknt/light-4j/commit/54743badb34260b76ed131d8b6a4f60210cc3673"},{"url":"https://github.com/networknt/light-4j/releases/tag/2.4.0","label":"light-4j 2.4.0 Release Notes"},{"url":"https://github.com/networknt/light-4j/blob/2.3.7/basic-auth/src/main/java/com/networknt/basicauth/BasicAuthHandler.java#L189-L200"},{"url":"https://github.com/networknt/light-4j/blob/2.3.7/ldap-util/src/main/java/com/networknt/ldap/LdapUtil.java#L152-L173"},{"url":"https://www.vulncheck.com/advisories/networknt-light-4j-2.1.5-before-2.4.0-authentication-bypass-via-empty-ldap-password","label":"VulnCheck Advisory: Networknt light-4j 2.1.5 before 2.4.0 Authentication Bypass via Empty LDAP Password"}],"tags":["cve.org"],"ingestedAt":"2026-10-20T16:10:53.297Z","slug":"CVE-2026-113682","body":"## Overview\n\nNetworknt 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.\n\n## Affected\n\n- `light-4j >= 2.1.5 < 2.4.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":40.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}