High severity8.8NVD Advisory· Published Nov 5, 2020· Updated Jun 17, 2026
CVE-2020-27387
CVE-2020-27387
Description
An unrestricted file upload issue in HorizontCMS through 1.0.0-beta allows an authenticated remote attacker (with access to the FileManager) to upload and execute arbitrary PHP code by uploading a PHP payload, and then using the FileManager's rename function to provide the payload (which will receive a random name on the server) with the PHP extension, and finally executing the PHP file via an HTTP GET request to /storage/<php_file_name>. NOTE: the vendor has patched this while leaving the version number at 1.0.0-beta.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
11- HorizontCMS/HorizontCMSdescription
cpe:2.3:a:horizontcms_project:horizontcms:1.0.0:alpha:*:*:*:*:*:*+ 8 more
- cpe:2.3:a:horizontcms_project:horizontcms:1.0.0:alpha:*:*:*:*:*:*
- cpe:2.3:a:horizontcms_project:horizontcms:1.0.0:alpha2:*:*:*:*:*:*
- cpe:2.3:a:horizontcms_project:horizontcms:1.0.0:alpha3:*:*:*:*:*:*
- cpe:2.3:a:horizontcms_project:horizontcms:1.0.0:alpha4:*:*:*:*:*:*
- cpe:2.3:a:horizontcms_project:horizontcms:1.0.0:alpha5:*:*:*:*:*:*
- cpe:2.3:a:horizontcms_project:horizontcms:1.0.0:alpha6:*:*:*:*:*:*
- cpe:2.3:a:horizontcms_project:horizontcms:1.0.0:alpha7:*:*:*:*:*:*
- cpe:2.3:a:horizontcms_project:horizontcms:1.0.0:alpha8:*:*:*:*:*:*
- cpe:2.3:a:horizontcms_project:horizontcms:1.0.0:beta:*:*:*:*:*:*
- Range: <=1.0.0-beta
Patches
Vulnerability mechanics
References
4- github.com/ttimot24/HorizontCMS/commit/436b5ab679fd27afa3d99c023dbe103113da4feenvdPatchThird Party Advisory
- packetstormsecurity.com/files/160046/HorizontCMS-1.0.0-beta-Shell-Upload.htmlnvdExploitThird Party AdvisoryVDB Entry
- blog.vonahi.io/whats-in-a-re-name/nvdExploitPatchThird Party Advisory
- github.com/rapid7/metasploit-framework/pull/14340nvdThird Party Advisory
News mentions
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