CVE-2021-47939
Evolution CMS 3.1.6 Authenticated Remote Code Execution via Module Creation
Description
Evolution CMS 3.1.6 contains a remote code execution vulnerability that allows authenticated users with module creation permissions to execute arbitrary system commands by injecting PHP code into module parameters. Attackers can send POST requests to /manager/index.php with malicious PHP code in the 'post' parameter to create modules that execute arbitrary commands when invoked.
INFO
Published Date :
May 10, 2026, 1:16 p.m.
Last Modified :
July 25, 2026, 10:10 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update Evolution CMS to a version that addresses this vulnerability.
- Restrict module creation permissions to trusted users.
- Sanitize all user-supplied input, especially module parameters.
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-2021-47939.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47939 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-2021-47939
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-2021-47939 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47939 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.
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CVE Translated by [email protected]
Jul. 25, 2026
Action Type Old Value New Value Changed Translation Title: Evolution CMS de Evo, Description: Evolution CMS 3.1.6 contiene una vulnerabilidad de ejecución remota de código que permite a usuarios autenticados con permisos de creación de módulos ejecutar comandos de sistema arbitrarios inyectando código PHP en los parámetros del módulo. Los atacantes pueden enviar solicitudes POST a /manager/index.php con código PHP malicioso en el parámetro 'post' para crear módulos que ejecuten comandos arbitrarios cuando sean invocados. Title: Evolution CMS de Evo, Description: Evolution CMS 3.1.6 contiene una vulnerabilidad de ejecución remota de código que permite a usuarios autenticados con permisos de creación de módulos ejecutar comandos de sistema arbitrarios inyectando código PHP en los parámetros del módulo. Los atacantes pueden enviar solicitudes POST a /manager/index.php con código PHP malicioso en el parámetro 'post' para crear módulos que ejecuten comandos arbitrarios cuando sean invocados. -
CVE Translated by [email protected]
Jul. 24, 2026
Action Type Old Value New Value Added Translation Title: Evolution CMS de Evo, Description: Evolution CMS 3.1.6 contiene una vulnerabilidad de ejecución remota de código que permite a usuarios autenticados con permisos de creación de módulos ejecutar comandos de sistema arbitrarios inyectando código PHP en los parámetros del módulo. Los atacantes pueden enviar solicitudes POST a /manager/index.php con código PHP malicioso en el parámetro 'post' para crear módulos que ejecuten comandos arbitrarios cuando sean invocados. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Evo', 'product': 'Evolution CMS', 'versions': [{'status': 'affected', 'version': '3.1.6'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2021-47939', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-05-11T16:08:34.856231Z'} -
New CVE Received by [email protected]
May. 10, 2026
Action Type Old Value New Value Added Description Evolution CMS 3.1.6 contains a remote code execution vulnerability that allows authenticated users with module creation permissions to execute arbitrary system commands by injecting PHP code into module parameters. Attackers can send POST requests to /manager/index.php with malicious PHP code in the 'post' parameter to create modules that execute arbitrary commands when invoked. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/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 CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-94 Added Reference https://evo.im/ Added Reference https://github.com/evolution-cms/evolution/releases Added Reference https://www.exploit-db.com/exploits/50296 Added Reference https://www.vulncheck.com/advisories/evolution-cms-authenticated-remote-code-execution-via-module-creation