{"id":"CVE-2026-24664","summary":"Open eClass is Vulnerable to Username Enumeration via Login Response Discrepancies","details":"The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, a username enumeration vulnerability allows unauthenticated attackers to identify valid user accounts by analyzing differences in the login response behavior. This issue has been patched in version 4.2.","aliases":["GHSA-c3wq-m629-5h2j"],"modified":"2026-08-12T03:51:11.248204256Z","published":"2026-02-03T16:56:07.167Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24664.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-204"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24664.json"},{"type":"ADVISORY","url":"https://github.com/gunet/openeclass/security/advisories/GHSA-c3wq-m629-5h2j"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-24664"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/gunet/openeclass","events":[{"introduced":"0"},{"fixed":"6a98ba9fb5ce499b53d2cd0708f3080d92632dfa"}],"database_specific":{"cpe":"cpe:2.3:a:gunet:open_eclass_platform:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"4.2"}],"source":["AFFECTED_FIELD","CPE_RANGE"]}}],"versions":["Release_4.1.2","Release_4.1.1","Release_3.2","Release_3.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-24664.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"}]}