CVE-2022-39297: MelisCms provides a full CMS for Melis Platform, including templating system, drag'n'drop of plugins, SEO and

Q: How do I fix CVE-2022-39297?

meliscms: upgrade to 5.0.1. Exact commands for each OS are on this page.

Q: Is CVE-2022-39297 being exploited?

CVE-2022-39297 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-2022-39297 affect?

CVE-2022-39297 affects meliscms. Severity is high (CVSS 7.7). MelisCms provides a full CMS for Melis Platform, including templating system, drag'n'drop of plugins, SEO and many administration tools. Attackers can deserialize arbitrary data on affected versions of `melisplatform/melis-cms`, and ultimat

Q: How urgent is CVE-2022-39297?

Priority 49/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.7REMOTEUPGRADE

CVE-2022-39297 is a high-severity flaw (CVSS 7.7) affecting meliscms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

MelisCms provides a full CMS for Melis Platform, including templating system, drag'n'drop of plugins, SEO and many administration tools. Attackers can deserialize arbitrary data on affected versions of `melisplatform/melis-cms`, and ultimately leads to the execution of arbitrary PHP code on the system. Conducting this attack does not require authentication. Users should immediately upgrade to `melisplatform/melis-cms` >= 5.0.1. This issue was add

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.7 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-502
Published	2022-10-12
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: melistechnology

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

Am I affected?

Timeline

2022-10-12 23:15 UTCPublished CVE record published
2026-06-17 04:58 UTCUpdated Record last modified

melistechnology meliscms UPGRADE

Affected: < 5.0.1

Fixed in: 5.0.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 5.0.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade meliscms

Note

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

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-2022-39297?

meliscms: upgrade to 5.0.1. Exact commands for each OS are on this page.

Is CVE-2022-39297 being exploited?

CVE-2022-39297 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-2022-39297 affect?

CVE-2022-39297 affects meliscms. Severity is high (CVSS 7.7). MelisCms provides a full CMS for Melis Platform, including templating system, drag'n'drop of plugins, SEO and many administration tools. Attackers can deserialize arbitrary data on affected versions of `melisplatform/melis-cms`, and ultimat

How urgent is CVE-2022-39297?

Priority 49/100. High severity; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2022-39298 HIGH 7.7 UPGRADE MelisFront is the engine that displays website hosted on Melis Platform

References

← Back to latest CVEs