CVE-2023-4220

mediumpriority · attend · 61EPSS 0.761 · 100 %ileexploit · weaponizedEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

28 exploits · weaponized

Likely / severe?

76.1% (100th) EPSS

CVSS 6.1 · medium

Is it mine?

2 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

8.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.1–8.1

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 2.7

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · info@starlabs.sgexploitability 2.2 · impact 5.9

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-434USprimaryCWE-79USprimary

exploits (28)

Public proof-of-concept and weaponised exploit code.

exploit/linux/http/chamilo_bigupload_webshellChamilo v1.11.24 Unrestricted File Upload PHP Webshellweaponized · metasploit
EDB-52083Chamilo LMS 1.11.24 - Remote Code Execution (RCE)PoC · exploit_db
0x00-null/Chamilo-CVE-2023-4220-RCE-Exploit(CVE-2023-4220) Chamilo LMS Unauthenticated Big Upload File Remote Code Execution PoC · poc_in_github
0xDTC/Chamilo-LMS-CVE-2023-4220-ExploitRefurbish Chamilo LMS CVE-2023-4220 exploit written in bashPoC · poc_in_github
Al3xGD/CVE-2023-4220-ExploitLMS Chamilo 1.11.24 CVE-2023-4220 ExploitPoC · poc_in_github
H4cking4All/CVE-2023-4220CVE-2023-4220 Chamilo ExploitPoC · poc_in_github

affected products (2)

Products and version ranges known to be affected.

Chamilo Chamilo≤ 0 ≤1.11.24enisa_euvdEU
chamilo chamilo lms≤ 1.11.24nvdUScpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2023-11-28modified 2026-06-17

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+57931 more

references (11)

External citations — patches, advisories, analysis.

scry

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