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CVE-2021-46364

20
FAUCET Score

CVE-2021-46364 describes a critical arbitrary code execution vulnerability in Magnolia CMS versions 6.2.3 and below, stemming from an insecure Snake YAML parser. With a CVSS score of 7.8 (High), this vulnerability allows unauthenticated attackers to execute arbitrary code with high impact on confidentiality, integrity, and availability, though it requires user interaction. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.2.4CPE matchmatch criteria
cpe:2.3:a:magnolia-cms:magnolia_cms:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.57%
Probability of exploitation in next 30 days
EPSS Percentile
72.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0157 is in the 71st percentile among its peer group of 11,621 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

mavenpatch availablevia ghsa
Product: info.magnolia:magnolia-coreFixed in: 6.2.4

Vendor Advisories (1)

mavenGHSA-pwr6-p3fh-grc2high

Deserialization of Untrusted Data in Magnolia CMS

Feb 12, 2022

References

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