{"id":"CVE-2020-37113","aliases":["EUVD-2020-30982","GHSA-fx56-pxgc-fpm7"],"status":"published","title":"GUnet OpenEclass 1.7.3 E-learning platform - File Upload Extension Bypass","description":"GUnet OpenEclass 1.7.3 allows authenticated users to bypass file extension restrictions when uploading files. By renaming a PHP file to .php3 or .PhP, an attacker can upload a web shell and execute arbitrary code on the server. This vulnerability enables remote code execution by bypassing the intended file type checks in the exercise submission feature.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00928,"percentile":0.60855,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-434"],"published":"2026-02-03T16:52:45Z","modified":"2026-07-28T01:47:09Z","products":[{"vendor":"gunet","product":"open_eclass_platform"},{"vendor":"openeclass","product":"gunet openeclass"}],"references":[{"url":"https://www.exploit-db.com/exploits/48163","tags":["exploit","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://www.openeclass.org/","tags":["product","Product"]},{"url":"https://download.openeclass.org/files/docs/1.7/CHANGES.txt","tags":["patch","Release Notes"]},{"url":"https://www.vulncheck.com/advisories/gunet-openeclass-e-learning-platform-file-upload-extension-bypass","tags":["third-party-advisory","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-37113"},{"url":"https://www.openeclass.org"},{"url":"https://github.com/advisories/GHSA-fx56-pxgc-fpm7"}],"sources":{"cve":[{"id":"CVE-2020-37113","title":"GUnet OpenEclass 1.7.3 E-learning platform - File Upload Extension Bypass","description":"GUnet OpenEclass 1.7.3 allows authenticated users to bypass file extension restrictions when uploading files. By renaming a PHP file to .php3 or .PhP, an attacker can upload a web shell and execute arbitrary code on the server. This vulnerability enables remote code execution by bypassing the intended file type checks in the exercise submission feature.","status":"published","published":"2026-02-03T16:52:45.772Z","modified":"2026-07-28T01:47:09.959Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:35:47.22408Z"}],"euvd":[{"id":"EUVD-2020-30982","description":"GUnet OpenEclass 1.7.3 allows authenticated users to bypass file extension restrictions when uploading files. By renaming a PHP file to .php3 or .PhP, an attacker can upload a web shell and execute arbitrary code on the server. This vulnerability enables remote code execution by bypassing the intended file type checks in the exercise submission feature.","status":"published","published":"2026-02-03T16:52:45Z","modified":"2026-07-28T01:47:09Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T18:02:32.984181Z"}],"ghsa":[{"id":"GHSA-fx56-pxgc-fpm7","title":"GUnet OpenEclass 1.7.3 allows authenticated users to bypass file extension restrictions when...","description":"GUnet OpenEclass 1.7.3 allows authenticated users to bypass file extension restrictions when uploading files. By renaming a PHP file to .php3 or .PhP, an attacker can upload a web shell and execute arbitrary code on the server. This vulnerability enables remote code execution by bypassing the intended file type checks in the exercise submission feature.","status":"published","published":"2026-02-03T18:30:45Z","modified":"2026-02-03T18:30:53Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"},{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T15:06:01.446393Z"}],"nvd":[{"id":"CVE-2020-37113","description":"GUnet OpenEclass 1.7.3 allows authenticated users to bypass file extension restrictions when uploading files. By renaming a PHP file to .php3 or .PhP, an attacker can upload a web shell and execute arbitrary code on the server. This vulnerability enables remote code execution by bypassing the intended file type checks in the exercise submission feature.","status":"published","published":"2026-02-03T18:16:11.527Z","modified":"2026-06-17T03:17:01.617Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:06:48.591569Z"}]}}