CVE-2022-37159: Claroline 13.5.7 and prior is vulnerable to Remote code execution via arbitrary file upload.

Q: How do I fix CVE-2022-37159?

claroline: upgrade to newer than 13.5.7. Exact commands for each OS are on this page.

Q: Is CVE-2022-37159 being exploited?

CVE-2022-37159 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-37159 affect?

CVE-2022-37159 affects claroline. Severity is critical (CVSS 9.8). Claroline 13.5.7 and prior is vulnerable to Remote code execution via arbitrary file upload.

Q: How urgent is CVE-2022-37159?

Priority 69/100. Critical severity; EPSS top 2%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2022-37159 is a critical-severity flaw (CVSS 9.8) affecting claroline. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Critical severity
EPSS top 2%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	27.2% (top 2%)
CISA exploited list	No
Weakness	CWE-434
Published	2022-08-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: claroline

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-08-25 17:15 UTCPublished CVE record published
2026-06-17 04:54 UTCUpdated Record last modified

claroline claroline UPGRADE

Affected: <= 13.5.7

Fixed in: newer than 13.5.7

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy claroline || rpm -q claroline || claroline --version

2. UPGRADE to newer than 13.5.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade claroline

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade claroline

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora ELN · luksmeta · FIXED · 11-3.eln159 · FEDORA-2026-5176083b78 · source

sudo dnf upgrade --advisory=FEDORA-2026-5176083b78

Fedora 46 · openscad · FIXED · 2021.01-34.fc46 · FEDORA-2026-faf1721128 · source

sudo dnf upgrade --advisory=FEDORA-2026-faf1721128

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: github.com/matthieu-hackwitharts/claroline-CVEs/blob/main/rce/rce_file_upload.md

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-37159?

claroline: upgrade to newer than 13.5.7. Exact commands for each OS are on this page.

Is CVE-2022-37159 being exploited?

CVE-2022-37159 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-37159 affect?

CVE-2022-37159 affects claroline. Severity is critical (CVSS 9.8). Claroline 13.5.7 and prior is vulnerable to Remote code execution via arbitrary file upload.

How urgent is CVE-2022-37159?

Priority 69/100. Critical severity; EPSS top 2%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-37162 MEDIUM 5.4 UPGRADE Claroline 13.5.7 and prior is vulnerable to Cross Site Scripting (XSS)
CVE-2022-37161 MEDIUM 6.1 UPGRADE Claroline 13.5.7 and prior is vulnerable to Cross Site Scripting (XSS) via SVG file upload.
CVE-2022-37160 MEDIUM 5.4 UPGRADE Claroline 13.5.7 and prior allows an authenticated attacker to elevate privileges via the arbitrary creation o

References

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