{"id":"CVE-2026-113682","summary":"Networknt light-4j 2.1.5 before 2.4.0 Authentication Bypass via Empty LDAP Password","details":"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.","modified":"2026-10-21T02:52:36.246684385Z","published":"2026-10-20T15:40:42.500Z","database_specific":{"cwe_ids":["CWE-287"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113682.json","cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113682.json"},{"type":"PACKAGE","url":"https://github.com/networknt/light-4j"},{"type":"ARTICLE","url":"https://github.com/networknt/light-4j/blob/2.3.7/basic-auth/src/main/java/com/networknt/basicauth/BasicAuthHandler.java#L189-L200"},{"type":"ARTICLE","url":"https://github.com/networknt/light-4j/blob/2.3.7/ldap-util/src/main/java/com/networknt/ldap/LdapUtil.java#L152-L173"},{"type":"FIX","url":"https://github.com/networknt/light-4j/commit/54743badb34260b76ed131d8b6a4f60210cc3673"},{"type":"REPORT","url":"https://github.com/networknt/light-4j/issues/2804"},{"type":"FIX","url":"https://github.com/networknt/light-4j/pull/2805"},{"type":"ADVISORY","url":"https://github.com/networknt/light-4j/releases/tag/2.4.0"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113682"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/networknt-light-4j-2.1.5-before-2.4.0-authentication-bypass-via-empty-ldap-password"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/networknt/light-4j","events":[{"introduced":"c3e16c93d621d003497f3ef7febc1f389abb1b8f"},{"fixed":"cd99b0c978755a9036a0eef485e3fe1ed9cb4522"},{"fixed":"54743badb34260b76ed131d8b6a4f60210cc3673"}],"database_specific":{"extracted_events":[{"source":"AFFECTED_FIELD","strategy":"StandardRange","range":[{"introduced":"2.1.5"},{"fixed":"2.4.0"}]},{"range":[{"fixed":"54743badb34260b76ed131d8b6a4f60210cc3673"}],"source":"REFERENCES_COMMIT"},{"source":"REFERENCES_TAG","original_tag":"2.4.0","range":[{"fixed":"cd99b0c978755a9036a0eef485e3fe1ed9cb4522"}]}]}}],"versions":["2.3.7","2.3.6","2.3.5","2.3.4","2.3.3","2.3.2","2.3.1","2.1.37","2.1.36","2.1.35","2.1.34","2.1.33","2.1.32","2.1.31","2.1.30","2.1.29","2.1.28","2.1.27","2.1.26","2.1.25","2.1.24","2.1.23","2.1.22","2.1.20","2.1.18","2.1.17","2.1.16","2.1.15","2.1.12","2.1.11","2.1.10","2.1.9","2.1.8","2.1.7","2.1.6","2.1.5"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-113682.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"}]}