CVE-2018-6383

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

Monstra CMS through 3.0.4 has an incomplete "forbidden types" list that excludes .php (and similar) file extensions but not the .pht or .phar extension, which allows remote authenticated Admins or Editors to execute arbitrary PHP code by uploading a file, a different vulnerability than CVE-2017-18048.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-184

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

http://packetstormsecurity.com/files/162968/Monstra-CMS-3.0.4-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://github.com/Hacker5preme/Exploits/tree/main/CVE-2018-6383-ExploitExploit, Third Party Advisory
https://github.com/monstra-cms/monstra/issues/429Exploit, Issue Tracking, Third Party Advisory
http://packetstormsecurity.com/files/162968/Monstra-CMS-3.0.4-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://github.com/Hacker5preme/Exploits/tree/main/CVE-2018-6383-ExploitExploit, Third Party Advisory
https://github.com/monstra-cms/monstra/issues/429Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Jan 29, 2018
Last modified: Jun 17, 2026
NVD status: Modified

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