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CVE-2023-4220

Chamilo LMS Unauthenticated Big Upload File Remote Code Execution

MEDIUM
6.1
CVSS Score
Published: November 28, 2023 at 07:11 AM UTC
Updated: June 17, 2026 at 06:37 AM UTC
2 products affected across 1 vendorChamilo LMSChamilo

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Severity
MEDIUM6.1
Exploit prediction
EPSS 76%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Chamilo LMS· Chamilo
95%
v ≤ 1.11.24
Chamilo· Chamilo
60%
v ≤ 1.11.24

References (3)

Patch
Source: [email protected]
https://github.com/chamilo/chamilo-lms/commit/3b487a55076fb06f96809b790a35dcdd42f8ec49
Third Party AdvisoryExploit
Source: [email protected]
https://starlabs.sg/advisories/23/23-4220
Vendor AdvisoryIssue Tracking
Source: [email protected]
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

CVSS

6.1MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-434CWE-79

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