CVE-2016-20052 | Snews CMS 1.7 contains an unrestricted file upload vulnerabi… | CVSS 9.8 CRITICAL

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.

Metadata

CVE ID: CVE-2016-20052
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-04-04 13:33 UTC
Published: 2026-04-04 13:50 UTC
Last updated: 2026-04-06 15:28 UTC
Primary CWE: CWE-434
Unrestricted Upload of File with Dangerous Type
Vendor / Product: Snewscms / Snews CMS upload sheller
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
Snewscms	Snews CMS upload sheller	—	1.7

Weakness (CWE)

CWE	Source	Description
CWE-434	cna	Unrestricted Upload of File with Dangerous Type

CVSS scores (2)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3	CRITICAL	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References (2)

ExploitDB-40706 https://www.exploit-db.com/exploits/40706
VulnCheck Advisory: Snews CMS 1.7 Unrestricted File Upload via snews_files https://www.vulncheck.com/advisories/snews-cms-unrestricted-file-upload-via-snews-files