CVE-2021-28428
Critical
Description
File upload vulnerability in HorizontCMS before 1.0.0-beta.3 via uploading a .htaccess and *.hello files using the Media Files upload functionality. The original file upload vulnerability (CVE-2020-27387) was remediated by restricting the PHP extensions; however, we confirmed that the filter was bypassed via uploading an arbitrary .htaccess and *.hello files in order to execute PHP code to gain RCE.
SeverityCritical
CVSS9.8
Exploit probability—
ProductHorizontcms
PublishedApr 5, 2022
First seenApr 5, 2022
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| horizontcms_project horizontcms | 1.0.0 | — |
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