CVE-2023-3533 json
Chamilo LMS Unauthenticated Remote Code Execution via Arbitrary File Write
published 2023-11-28 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-44189
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.5%
- EPSS 3.5% chance of exploitation in 30 days, percentile 89%
- public exploits
- 0
- none known
Summary
Path traversal in file upload functionality in `/main/webservices/additional_webservices.php` in Chamilo LMS <= v1.11.20 allows unauthenticated attackers to perform stored cross-site scripting attacks and obtain remote code execution via arbitrary file write.
Patch / fix
Exploit prediction
3.50% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- starlabs.sg https://starlabs.sg/advisories/23/23-3533/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Chamilo Chamilo
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
github.com
/chamilo/chamilo-lms/commit/37be9ce7243a30259047dd4517c48ff8b21d657a
patch
-
support.chamilo.org
/projects/chamilo-18/wiki/security_issues#Issue-124-2023-07-13-Critical-impact-High-risk-Unauthenticated-Arbit
vendor-advisory, issue-tracking, patch
-
starlabs.sg
/advisories/23/23-3533/
third-party-advisory, exploit
Sources
- CVE List CVE-2023-3533
- NVD CVE-2023-3533
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