CVE-2021-46361 Arbitrary code execution in Magnolia CMS

What is CVE-2021-46361?

CVE-2021-46361 is a critical code injection vulnerability in n/a, published on 11 Feb 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An 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 crafted FreeMarker payload.

Which versions are affected by CVE-2021-46361?

2 open source packages ship an affected version, including info.magnolia:magnolia-core. It affects 1 product.

Products include Magnolia-Cms Magnolia Cms.

How do I fix CVE-2021-46361?

Upgrade info.magnolia:magnolia-core to 6.2.12 or later.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2021-46361 being exploited?

There is no known exploitation of CVE-2021-46361 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in n/a

• CVE-2021-46362 Code injection in n/a Critical 9.8
• CVE-2021-46366 Cross-Site Request Forgery in Magnolia CMS High 8.8
• CVE-2021-46363 Arbitrary code execution in Magnolia CMS High 7.8
• CVE-2021-46364 Deserialization of Untrusted Data in Magnolia CMS High 7.8
• CVE-2021-46365 Improper Restriction of XML External Entity Reference in Magnolia CMS High 7.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-m4hg-5p2m-fm5m.