CVE-2023-4220 EXPLOIT
8.1
HIGH · CVSS 3.1 · EPSS 76.1% (pctl 100)
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 8.1 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 76.08% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-434 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2023-11-28 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| chamilo | chamilo lms |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Chamilo LMS 1.11.24 - Remote Code Execution (RCE) | 2025-03-18 |
References
- https://github.com/chamilo/chamilo-lms/commit/3b487a55076fb06f96809b790a35dcdd42f8ec49
- https://starlabs.sg/advisories/23/23-4220
- 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
- https://github.com/chamilo/chamilo-lms/commit/3b487a55076fb06f96809b790a35dcdd42f8ec49
- https://starlabs.sg/advisories/23/23-4220
- 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
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