{"id":"CVE-2021-3239","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-3239","generatedAt":"2026-11-05T01:39:11.095Z","title":"E-Learning System 1.0 suffers from an unauthenticated SQL injection vulnerability, which allows remote attackers to execute arbitrary code on the hosting web server and gain a reverse shell.","description":"E-Learning System 1.0 suffers from an unauthenticated SQL injection vulnerability, which allows remote attackers to execute arbitrary code on the hosting web server and gain a reverse shell.","published":"2021-02-15T21:15:14.000Z","lastModified":"2026-06-17T04:04:51.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-89"],"affected":["e-learning system project/e-learning system"],"epss":{"score":0.18874,"percentile":0.97295,"date":"2026-11-03","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 18.9%, higher than 97% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://github.com/TCSWT/E-Learning-System/blob/main/README.md","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/janobe/CVE-nu11-101821","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://packetstormsecurity.com/files/160966/E-Learning-System-1.0-SQL-Injection-Shell-Upload.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://www.exploit-db.com/exploits/49434","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://www.sourcecodester.com/php/12808/e-learning-system-using-phpmysqli.html","tags":["Product","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/TCSWT/E-Learning-System/blob/main/README.md","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/janobe/CVE-nu11-101821","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://packetstormsecurity.com/files/160966/E-Learning-System-1.0-SQL-Injection-Shell-Upload.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/49434","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.sourcecodester.com/php/12808/e-learning-system-using-phpmysqli.html","tags":["Product","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-3239","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."}