{"id":"CVE-2026-63238","aliases":["EUVD-2026-50133","GHSA-2g2j-fq65-5w72"],"status":"published","title":"Authentication bypass vulnerability","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.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00341,"percentile":0.27903,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2026-07-29T06:27:03Z","modified":"2026-10-23T23:10:00Z","products":[{"vendor":"an unrestricted scorm file upload vulnerability in koollab lms allowed an authenticated module designer to upload a scorm package containing a php webshell to a publicly accessible directory and execute arbitrary code on the server.","product":"koollab lms"},{"vendor":"three learning","product":"koollab lms"}],"references":[{"url":"https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-094/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63238"},{"url":"https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-094"},{"url":"https://github.com/advisories/GHSA-2g2j-fq65-5w72"}],"sources":{"cve":[{"id":"CVE-2026-63238","title":"Authentication bypass vulnerability","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.","status":"published","published":"2026-07-29T06:27:03.705Z","modified":"2026-07-29T14:28:37.043Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:19:56.284359Z"}],"euvd":[{"id":"EUVD-2026-50133","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.","status":"published","published":"2026-07-29T06:27:03Z","modified":"2026-07-29T14:28:37Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T18:02:30.152277Z"}],"ghsa":[{"id":"GHSA-2g2j-fq65-5w72","title":"An authentication bypass vulnerability in Koollab LMS allowed an unauthenticated\nattacker to take...","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.","status":"published","published":"2026-07-29T09:31:27Z","modified":"2026-07-29T15:31:11Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"medium"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T15:09:54.335538Z"}],"nvd":[{"id":"CVE-2026-63238","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.","status":"published","published":"2026-07-29T07:16:43.237Z","modified":"2026-10-23T23:10:00.157Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:12:33.629616Z"}]}}