What’s Vulnerable › Vulnerabilities

CVE-2021-46364

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-02-11 · updated 2026-06-17
• Weakness: CWE-502

Description

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.

Affected products

• Magnolia-Cms Magnolia Cms: before 6.2.4 — fixed in 6.2.4

How to fix

Upgrade to a fixed version: Magnolia-Cms Magnolia Cms 6.2.4. Check the vendor advisory for mitigations.

References

• https://docs.magnolia-cms.com/product-docs/6.2/Releases/Release-notes-for-Magnolia-CMS-6.2.4.html#_security_advisory
• https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2021-46364-YAML%20Deserialization-Magnolia%20CMS
• https://docs.magnolia-cms.com/product-docs/6.2/Releases/Release-notes-for-Magnolia-CMS-6.2.4.html#_security_advisory
• https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2021-46364-YAML%20Deserialization-Magnolia%20CMS

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