CVE-2021-28931: Unrestricted Upload of File with Dangerous Type

September 8, 2021

Arbitrary file upload vulnerability in Fork CMS 5.9.2 allows attackers to create or replace arbitrary files in the /themes directory via a crafted zip file uploaded to the Themes panel.

References

github.com/advisories/GHSA-748f-wv76-x9hg
github.com/bousalman/ForkCMS-arbitrary-upload/blob/main/README.md
github.com/forkcms/forkcms/pull/3351
github.com/forkcms/forkcms/releases/tag/5.9.2
nvd.nist.gov/vuln/detail/CVE-2021-28931

Code Behaviors & Features

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