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CVE-2023-4223

22
FAUCET Score

CVE-2023-4223 is an unrestricted file upload vulnerability in Chamilo LMS versions up to 1.11.24, specifically within the /main/inc/ajax/document.ajax.php component. This flaw allows authenticated attackers with a learner role to achieve remote code execution by uploading malicious PHP files. With a CVSS score of 8.8 (High), this vulnerability presents a significant risk due to its low attack complexity and high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0, <= 1.11.24CPE match
cpe:2.3:a:chamilo:chamilo:*:*:*:*:*:*:*:*
<= 1.11.24CPE matchmatch criteria
cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.83%
Probability of exploitation in next 30 days
EPSS Percentile
76.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0183 is in the 75th percentile among its peer group of 17,844 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / chamilo/chamilo-lms/commit/3d74fb7d99bd2e287730552f7a66562417a55047
Patch
github.com / chamilo/chamilo-lms/commit/6f32625a012d5de2dfe8edbccb4ed14a85e310d4
Patch
github.com / chamilo/chamilo-lms/commit/e864127a440c2cab0eb62c113a04e2e904543a1f
Patch
starlabs.sg / advisories/23/23-4223
ExploitThird Party Advisory
support.chamilo.org / projects/chamilo-18/wiki/security_issues
Issue TrackingVendor Advisory