{"id":"CVE-2026-63238","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-63238","generatedAt":"2026-10-28T05:59:14.633Z","title":"An authentication bypass vulnerability in Koollab LMS allowed an unauthenticated attacker to take over any account, including administrator accounts, by supplying a valid user UUID without providing primary credentials via the 2FA validation endpoint.","description":"An authentication bypass vulnerability in Koollab LMS allowed an unauthenticated\nattacker to take over any account, including administrator accounts, by\nsupplying a valid user UUID without providing primary credentials via the 2FA\nvalidation endpoint.","published":"2026-07-29T07:16:43.000Z","lastModified":"2026-10-23T23:10:00.000Z","status":"Deferred","sourceIdentifier":"5f57b9bf-260d-4433-bf07-b6a79e9bb7d4","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N"},"cwe":["CWE-287"],"affected":[],"epss":{"score":0.00341,"percentile":0.27398,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.34%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-094/","source":"5f57b9bf-260d-4433-bf07-b6a79e9bb7d4"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-63238","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."}