CVE-2021-47778
GetSimple CMS My SMTP Contact Plugin 1.1.2 - PHP Code Injection
Description
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.
INFO
Published Date :
Jan. 21, 2026, 6:16 p.m.
Last Modified :
March 6, 2026, 8:15 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update the My SMTP Contact Plugin to the latest version.
- Apply security patches provided by the vendor.
- Review plugin configurations for suspicious entries.
- Remove the vulnerable plugin if updates are unavailable.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-47778.
| URL | Resource |
|---|---|
| http://get-simple.info | Product |
| https://github.com/GetSimpleCMS/GetSimpleCMS | Product |
| https://github.com/boku7/gsSMTP-Csrf2Xss2RCE/ | Exploit Third Party Advisory |
| https://www.exploit-db.com/exploits/49774 | Exploit Third Party Advisory VDB Entry |
| https://www.vulncheck.com/advisories/getsimple-cms-my-smtp-contact-plugin-php-code-injection | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47778 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-47778
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-47778 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47778 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 06, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:get-simple:getsimplecms:1.1.2:*:*:*:*:*:*:* Added Reference Type VulnCheck: http://get-simple.info Types: Product Added Reference Type VulnCheck: https://github.com/boku7/gsSMTP-Csrf2Xss2RCE/ Types: Exploit, Third Party Advisory Added Reference Type VulnCheck: https://github.com/GetSimpleCMS/GetSimpleCMS Types: Product Added Reference Type VulnCheck: https://www.exploit-db.com/exploits/49774 Types: Exploit, Third Party Advisory, VDB Entry Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/getsimple-cms-my-smtp-contact-plugin-php-code-injection Types: Third Party Advisory -
New CVE Received by [email protected]
Jan. 21, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V4.0 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 Added CWE CWE-94 Added Reference http://get-simple.info Added Reference https://github.com/boku7/gsSMTP-Csrf2Xss2RCE/ Added Reference https://github.com/GetSimpleCMS/GetSimpleCMS Added Reference https://www.exploit-db.com/exploits/49774 Added Reference https://www.vulncheck.com/advisories/getsimple-cms-my-smtp-contact-plugin-php-code-injection