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Vulnerability record · CVE-2021-46364 · published 11 February 2022

CVE-2021-46364: Magnolia-cms magnolia cms deserialization of untrusted data vulnerability

Magnolia Cms · Magnolia Cms

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.

7.8 CVSS 3.1 High EPSS 1.6% · top 25.6% CWE-502 · Deserialization of untrusted data
7.8CVSS 3.1 base score, v2 6.8
1.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-46361Magnolia-cms magnolia cms vulnerabilityAn issue in the Freemark Filter of Magnolia CMS v6.2.11 and below allows attackers to bypass security restrictions and execute arbitrary code via a c…EPSS 2.8%9.8CVE-2021-46362Magnolia-cms magnolia cms code injection vulnerabilityA Server-Side Template Injection (SSTI) vulnerability in the Registration and Forgotten Password forms of Magnolia v6.2.3 and below allows attackers …EPSS 4.7%8.8CVE-2021-46366Magnolia-cms magnolia cms cross-site request forgery vulnerabilityAn issue in the Login page of Magnolia CMS v6.2.3 and below allows attackers to exploit both an Open Redirect vulnerability and Cross-Site Request Fo…EPSS 0.76%7.8CVE-2021-46363Magnolia-cms magnolia cms csv injection vulnerabilityAn issue in the Export function of Magnolia v6.2.3 and below allows attackers to perform Formula Injection attacks via crafted CSV/XLS files. These f…EPSS 1.9%7.8CVE-2021-46365Magnolia-cms magnolia cms xml external entity (xxe) vulnerabilityAn issue in the Export function of Magnolia v6.2.3 and below allows attackers to execute XML External Entity attacks via a crafted XLF file.EPSS 1.7%6.1CVE-2022-33098Magnolia CMS Edit Contact stored XSS via SVG profile pictureMagnolia CMS 6.2.19 contains a cross-site scripting flaw in the Edit Contact function. An attacker can supply a crafted SVG document containing JavaS…EPSS 53%analysed6.1CVE-2021-25894Magnolia-cms magnolia cms cross-site scripting vulnerabilityMagnolia CMS from 6.1.3 to 6.2.3 contains a stored cross-site scripting (XSS) vulnerability in the /magnoliaPublic/travel/members/login.html mgnlUser…EPSS 1.1%5.4CVE-2021-25893Magnolia-cms magnolia cms cross-site scripting vulnerabilityMagnolia CMS from 6.1.3 to 6.2.3 contains a stored cross-site scripting (XSS) vulnerability in the setText parameter of /magnoliaAuthor/.magnolia/.EPSS 0.88%

Source: NIST National Vulnerability Database (record CVE-2021-46364), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.