CVE-2021-28998

7.2 highEPSS 1.3%

High (7.2) in cmsmadesimple cms made simple. EPSS 1.3% chance of exploitation in the next 30 days.

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

Severity

7.2 high

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

EPSS: 1.3% chance of exploitation in the next 30 days; higher than 70% of CVEs (scores of 2026-10-31)
CWE: CWE-434
Published: 2023-05-08
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19