{"id":"CVE-2023-4220","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-4220","generatedAt":"2026-11-04T22:43:11.972Z","title":"Unrestricted file upload in big file upload functionality in `/main/inc/lib/javascript/bigupload/inc/bigUpload.php` in Chamilo LMS <= v1.11.24 allows unauthenticated attackers to perform stored cross-site scripting attacks and obtain remote code…","description":"Unrestricted file upload in big file upload functionality in `/main/inc/lib/javascript/bigupload/inc/bigUpload.php` in Chamilo LMS <= v1.11.24 allows unauthenticated attackers to perform stored cross-site scripting attacks and obtain remote code execution via uploading of web shell.","published":"2023-11-28T08:15:07.000Z","lastModified":"2026-06-17T06:37:21.000Z","status":"Modified","sourceIdentifier":"info@starlabs.sg","cvss":{"version":"3.1","score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"cwe":["CWE-434","CWE-79"],"affected":["chamilo/chamilo lms"],"epss":{"score":0.76084,"percentile":0.99532,"date":"2026-11-03","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":false,"firstPublished":"2025-03-18","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":52083,"kind":"exploit","title":"Chamilo LMS 1.11.24 - Remote Code Execution (RCE)","url":"https://www.exploit-db.com/exploits/52083","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/php/webapps/52083.py","file":"exploits/php/webapps/52083.py","published":"2025-03-18","added":"2025-03-18","updated":"2025-03-18","author":"Mohamed Kamel BOUZEKRIA","type":"webapps","platform":"php","port":null,"verified":false,"codes":["CVE-2023-4220"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 76.1%, higher than 100% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://github.com/chamilo/chamilo-lms/commit/3b487a55076fb06f96809b790a35dcdd42f8ec49","tags":["Patch"],"source":"info@starlabs.sg"},{"url":"https://starlabs.sg/advisories/23/23-4220","tags":["Exploit","Third Party Advisory"],"source":"info@starlabs.sg"},{"url":"https://support.chamilo.org/projects/chamilo-18/wiki/security_issues#Issue-130-2023-09-04-Critical-impact-High-risk-Unauthenticated-users-may-gain-XSS-and-unauthenticated-RCE-CVE-2023-4220","tags":["Issue Tracking","Vendor Advisory"],"source":"info@starlabs.sg"},{"url":"https://github.com/chamilo/chamilo-lms/commit/3b487a55076fb06f96809b790a35dcdd42f8ec49","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://starlabs.sg/advisories/23/23-4220","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.chamilo.org/projects/chamilo-18/wiki/security_issues#Issue-130-2023-09-04-Critical-impact-High-risk-Unauthenticated-users-may-gain-XSS-and-unauthenticated-RCE-CVE-2023-4220","tags":["Issue Tracking","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-4220","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."}