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CVE-2021-28998

HighCVSS 7.2/10Last modified Jun 17, 2026

Description

File upload vulnerability in CMS Made Simple through 2.2.15 allows remote authenticated attackers to gain a webshell via a crafted phar file.

Metrics

CVSS 3.1 7.2/10CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

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

References

https://github.com/beerpwn/CVE/blob/master/cms_made_simple_2021/file_upload_RCE/File_upload_to_RCE.mdExploit
https://seclists.org/fulldisclosure/2021/Mar/50Mailing List, Third Party Advisory
https://github.com/beerpwn/CVE/blob/master/cms_made_simple_2021/file_upload_RCE/File_upload_to_RCE.mdExploit
https://seclists.org/fulldisclosure/2021/Mar/50Mailing List, Third Party Advisory

Timeline

Published: May 8, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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