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HIGH severity

CVE-2021-46366 — magnolia-core

HIGH

CVE-2021-46366 is a high-severity (CVSS 8.8) Cross-Site Request Forgery (CSRF) vulnerability in info.magnolia:magnolia-core. 1 public exploit reference exists, so weaponization risk is real. A fix is available for info.magnolia:magnolia-core — see the affected versions and patch details below.

Cross-Site Request Forgery in Magnolia CMS

Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Oct 8, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.8%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs54th percentile — riskier than 54% of all scored CVEsHighest risk
0.03%0.44%0.85%1.26%0.5%0.8%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2021-46366 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,386 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
☕info.magnolia:magnolia-core

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

An 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 Forgery (CSRF) in order to brute force and exfiltrate users' credentials.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Maveninfo.magnolia:magnolia-coreall versions6.2.4info.magnolia:magnolia-core:6.2.4

Affected Products

1 product · 1 configurations
Application
magnolia cmsmagnolia-cms
< 6.2.4
range
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

An issue in the Login page of Magnolia CMS v6.2.3 and below allows attac…

github.comNVDMar 2022

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for info.magnolia:magnolia-core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update info.magnolia:magnolia-core to 6.2.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-46366 is resolved across your whole dependency graph.

  3. Workarounds

    Stop reflecting attacker-controlled destinations: resolve every redirect target against an allowlist of paths or hosts you own, prefer a server-side key over a full URL in the request, and reject absolute URLs entirely where the flow only ever needs a relative one.

Frequently Asked Questions

An 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 Forgery (CSRF) in order to brute force and exfiltrate users' credentials.
O3 Security · Impact-Aware SCA

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CVE-2021-46366: magnolia-core CSRF — Fixed in 6.2.4