CVE-2021-47778

GetSimple CMS My SMTP Contact Plugin 1.1.2 contains a PHP code injection vulnerability. An authenticated administrator can inject arbitrary PHP code through plugin configuration parameters, leading to remote code execution on the server.

CVSS v4.0

8.6 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

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

EPSS

1.13% chance of exploitation in the next 30 days, 64th percentile

Published

2026-01-21

Updated

2026-07-15

Proof-of-concept exploits (2)

• https://www.exploit-db.com/exploits/49774
• boku7/gsSMTP-Csrf2Xss2RCE/

References

• CVE Record
• NVD entry

Related

• CVE-2020-23839
• CVE-2021-47860
• CVE-2021-47870
• CVE-2021-47777
• CVE-2021-47779
• CVE-2021-47776