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CRITICAL

CVE-2023-3533

CVSS v3

9.8

CRITICAL

EPSS Score

3.5 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2023-3533 yet.

Full record on NVD

Description

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.

Technical details

Published
2023-11-28

Frequently asked questions

What is CVE-2023-3533?

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.

Is CVE-2023-3533 actively exploited?

Active exploitation of CVE-2023-3533 has not been confirmed. Its EPSS score was 3.5% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-3533?

CVE-2023-3533 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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