{"id":"CVE-2026-113682","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-113682","generatedAt":"2026-10-28T01:03:06.075Z","title":"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.","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.","published":"2026-10-20T16:17:13.000Z","lastModified":"2026-10-23T14:17:33.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":9.1,"severity":"CRITICAL","vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-287"],"affected":[],"epss":{"score":0.00562,"percentile":0.46472,"date":"2026-10-26","history":[{"date":"2026-10-21","score":0.00477,"percentile":0.40125}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.56%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-20T16:17:13.000Z","detail":{"score":"9.1","severity":"CRITICAL","publishedAt":"2026-10-20T16:17:13.210Z"},"summary":"New CVE, critical severity (CVSS 9.1)."}],"references":[{"url":"https://github.com/networknt/light-4j/blob/2.3.7/basic-auth/src/main/java/com/networknt/basicauth/BasicAuthHandler.java#L189-L200","source":"disclosure@vulncheck.com"},{"url":"https://github.com/networknt/light-4j/blob/2.3.7/ldap-util/src/main/java/com/networknt/ldap/LdapUtil.java#L152-L173","source":"disclosure@vulncheck.com"},{"url":"https://github.com/networknt/light-4j/commit/54743badb34260b76ed131d8b6a4f60210cc3673","source":"disclosure@vulncheck.com"},{"url":"https://github.com/networknt/light-4j/issues/2804","source":"disclosure@vulncheck.com"},{"url":"https://github.com/networknt/light-4j/pull/2805","source":"disclosure@vulncheck.com"},{"url":"https://github.com/networknt/light-4j/releases/tag/2.4.0","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/networknt-light-4j-2.1.5-before-2.4.0-authentication-bypass-via-empty-ldap-password","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-113682","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}