Vulnerability Details : CVE-2020-27387

Public exploit exists!
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.
Published 2020-11-05 02:15:12
Updated 2022-10-19 15:58:30
Source MITRE
View at NVD,   CVE.org

Products affected by CVE-2020-27387

Exploit prediction scoring system (EPSS) score for CVE-2020-27387

EPSS FAQ
17.64%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 96 %
Percentile, the proportion of vulnerabilities that are scored at or less

Metasploit modules for CVE-2020-27387

  • HorizontCMS Arbitrary PHP File Upload
    Disclosure Date: 2020-09-24
    First seen: 2020-11-13
    exploit/multi/http/horizontcms_upload_exec
    This module exploits an arbitrary file upload vulnerability in HorizontCMS 1.0.0-beta in order to execute arbitrary commands. The module first attempts to authenticate to HorizontCMS. It then tries to upload a malicious PHP file via an HTTP POST request to

CVSS scores for CVE-2020-27387

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.5
 MEDIUM AV:N/AC:L/Au:S/C:P/I:P/A:P
8.0
6.4
 NIST
8.8
 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2.8
5.9
 NIST

CWE ids for CVE-2020-27387

References for CVE-2020-27387

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