CVE-2016-20052
Snews CMS 1.7 Unrestricted File Upload via snews_files
Description
Snews CMS 1.7 contains an unrestricted file upload vulnerability that allows unauthenticated attackers to upload arbitrary files including PHP executables to the snews_files directory. Attackers can upload malicious PHP files through the multipart form-data upload endpoint and execute them by accessing the uploaded file path to achieve remote code execution.
INFO
Published Date :
April 4, 2026, 2:16 p.m.
Last Modified :
July 21, 2026, 7:10 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 | CRITICAL | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 3.1 | CRITICAL | MITRE-CVE | ||||
| CVSS 4.0 | CRITICAL | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Solution
- Apply vendor patches or updates for Snews CMS.
- Configure upload endpoints to restrict executable files.
- Validate all uploaded file types on the server.
- Remove any malicious files if uploaded.
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-2016-20052.
| URL | Resource |
|---|---|
| https://www.exploit-db.com/exploits/40706 | Exploit VDB Entry |
| https://www.vulncheck.com/advisories/snews-cms-unrestricted-file-upload-via-snews-files | 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-2016-20052 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-2016-20052
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-2016-20052 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2016-20052 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.
-
CVE Translated by [email protected]
Jul. 21, 2026
Action Type Old Value New Value Added Translation Title: Snews CMS upload sheller de Snewscms, Description: Snews CMS 1.7 contiene una vulnerabilidad de carga de archivos sin restricciones que permite a atacantes no autenticados cargar archivos arbitrarios, incluyendo ejecutables PHP, al directorio snews_files. Los atacantes pueden cargar archivos PHP maliciosos a través del punto final de carga de multipart form-data y ejecutarlos accediendo a la ruta del archivo cargado para lograr la ejecución remota de código. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Snewscms', 'product': 'Snews CMS upload sheller', 'versions': [{'status': 'affected', 'version': '1.7'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2016-20052', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-04-06T15:25:26.408841Z'} -
Initial Analysis by [email protected]
Apr. 14, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:snewscms:snews:*:*:*:*:*:*:*:* versions up to (including) 1.7 Added Reference Type VulnCheck: https://www.exploit-db.com/exploits/40706 Types: Exploit, VDB Entry Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/snews-cms-unrestricted-file-upload-via-snews-files Types: Third Party Advisory -
New CVE Received by [email protected]
Apr. 04, 2026
Action Type Old Value New Value Added Description Snews CMS 1.7 contains an unrestricted file upload vulnerability that allows unauthenticated attackers to upload arbitrary files including PHP executables to the snews_files directory. Attackers can upload malicious PHP files through the multipart form-data upload endpoint and execute them by accessing the uploaded file path to achieve remote code execution. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/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:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-434 Added Reference https://www.exploit-db.com/exploits/40706 Added Reference https://www.vulncheck.com/advisories/snews-cms-unrestricted-file-upload-via-snews-files