---
id: CVE-2016-20052
title: >-
  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
summary: >-
  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…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-434
vendor: snewscms
product: snews
affected:
  - snews <= 1.7
published: '2026-04-04'
updated: '2026-07-21'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2016-20052'
references:
  - url: 'https://www.exploit-db.com/exploits/40706'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/snews-cms-unrestricted-file-upload-via-snews-files
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00951
epssPercentile: 0.59195
ingestedAt: '2026-07-21T16:51:40.941Z'
---

## Overview

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.

## Affected

- `snews <= 1.7`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.