CVE-2021-46364: A vulnerability in the Snake YAML parser of Magnolia CMS v6.2.3 and below allows attackers to execute arbitrar

Q: How do I fix CVE-2021-46364?

magnolia cms: upgrade to 6.2.4. Exact commands for each OS are on this page.

Q: Is CVE-2021-46364 being exploited?

CVE-2021-46364 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-2021-46364 affect?

CVE-2021-46364 affects magnolia cms. Severity is high (CVSS 7.8). A vulnerability in the Snake YAML parser of Magnolia CMS v6.2.3 and below allows attackers to execute arbitrary code via a crafted YAML file.

Q: How urgent is CVE-2021-46364?

Priority 51/100. High severity; Public exploit reference

This month

HIGH 7.8UPGRADE

CVE-2021-46364 is a high-severity flaw (CVSS 7.8) affecting magnolia cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability in the Snake YAML parser of Magnolia CMS v6.2.3 and below allows attackers to execute arbitrary code via a crafted YAML file.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.6% (top 25%)
CISA exploited list	No
Weakness	CWE-502
Published	2022-02-11
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: magnolia-cms

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

Am I affected?

Timeline

2022-02-11 21:15 UTCPublished CVE record published
2026-06-17 04:14 UTCUpdated Record last modified

magnolia-cms magnolia cms UPGRADE

Affected: < 6.2.4

Fixed in: 6.2.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy magnolia-cms || rpm -q magnolia-cms || magnolia-cms --version

2. UPGRADE to 6.2.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade magnolia-cms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade magnolia-cms

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-2021-46364?

magnolia cms: upgrade to 6.2.4. Exact commands for each OS are on this page.

Is CVE-2021-46364 being exploited?

CVE-2021-46364 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-2021-46364 affect?

CVE-2021-46364 affects magnolia cms. Severity is high (CVSS 7.8). A vulnerability in the Snake YAML parser of Magnolia CMS v6.2.3 and below allows attackers to execute arbitrary code via a crafted YAML file.

How urgent is CVE-2021-46364?

Priority 51/100. High severity; Public exploit reference

Related CVEs

CVE-2022-33098 MEDIUM 6.1 DOWNGRADE Magnolia CMS v6.2.19 was discovered to contain a cross-site scripting (XSS) vulnerability via the Edit Contact
CVE-2021-46366 HIGH 8.8 UPGRADE An issue in the Login page of Magnolia CMS v6.2.3 and below allows attackers to exploit both an Open Redirect
CVE-2021-46365 HIGH 7.8 UPGRADE An issue in the Export function of Magnolia v6.2.3 and below allows attackers to execute XML External Entity a
CVE-2021-46363 HIGH 7.8 UPGRADE An issue in the Export function of Magnolia v6.2.3 and below allows attackers to perform Formula Injection att
CVE-2021-46362 CRITICAL 9.8 UPGRADE A Server-Side Template Injection (SSTI) vulnerability in the Registration and Forgotten Password forms of Magn

References

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