What is CVE-2022-37159?

CVE-2022-37159 is a critical-severity vulnerability in Claroline, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2022-08-25.

How severe is CVE-2022-37159?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2022-37159 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Arbitrary file upload in Claroline

CVE-2022-37159

Claroline 13.5.7 and prior is vulnerable to Remote code execution via arbitrary file upload.

Vulnerability class: Unrestricted File Upload

Published 2022-08-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.259 (97.9th percentile), scored 2026-10-04.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.254 · newest: 0.259 · change: +0.005

Affected products

Claroline

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

References

github.com/matthieu-hackwitharts/claroline-CVEs/blob/main/rce/rce_file_upload.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-37159?: CVE-2022-37159 is a critical-severity vulnerability in Claroline, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2022-08-25.
How severe is CVE-2022-37159?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-37159 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.