CVE-2023-4220CWE-434

Chamilo LMS Unauthenticated Big Upload File Remote Code Execution

High · published November 28, 2023

Patch now

High probability of exploitation

CVSS calls it high at 8.1. It sits in the 99.5th percentile for exploit probability.

CVSS v3.1
8.1
EPSS
76%
Percentile
99.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.76084 · 99.5th percentile
Weakness
CWE-434 · Unrestricted Upload of File with Dangerous Type
Published
2023-11-28T07:11Z
EPSS history
Timeline
  • 28 NOV 07:11Z
    Chamilo LMS Unauthenticated Big Upload File Remote Code Execution
    cvelistv5