High severity8.8OSV Advisory· Published Jan 29, 2018· Updated Jun 17, 2026
CVE-2018-6383
CVE-2018-6383
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.
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Affected products
2Patches
Vulnerability mechanics
References
3- packetstormsecurity.com/files/162968/Monstra-CMS-3.0.4-Remote-Code-Execution.htmlnvdExploitThird Party AdvisoryVDB Entry
- github.com/Hacker5preme/Exploits/tree/main/CVE-2018-6383-ExploitnvdExploitThird Party Advisory
- github.com/monstra-cms/monstra/issues/429nvdExploitIssue TrackingThird Party Advisory
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