CVE-2016-20052

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	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

Configurations

Configuration 1 (hide)

cpe:2.3:a:snewscms:snews:*:*:*:*:*:*:*:*

History

14 Apr 2026, 19:05

Type	Values Removed	Values Added
References	~~() https://www.exploit-db.com/exploits/40706 -~~	() https://www.exploit-db.com/exploits/40706 - Exploit, VDB Entry
References	~~() https://www.vulncheck.com/advisories/snews-cms-unrestricted-file-upload-via-snews-files -~~	() https://www.vulncheck.com/advisories/snews-cms-unrestricted-file-upload-via-snews-files - Third Party Advisory
CPE		cpe:2.3:a:snewscms:snews::::::::
First Time		Snewscms Snewscms snews

04 Apr 2026, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-04 14:16

Updated : 2026-04-14 19:05

NVD link : CVE-2016-20052

Mitre link : CVE-2016-20052

CVE.ORG link : CVE-2016-20052

JSON object : View

Products Affected

snewscms

snews

CWE

CWE-434

Unrestricted Upload of File with Dangerous Type

{"id": "CVE-2016-20052", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "disclosure@vulncheck.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 9.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "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/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2026-04-04T14:16:17.520", "references": [{"url": "https://www.exploit-db.com/exploits/40706", "tags": ["Exploit", "VDB Entry"], "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/snews-cms-unrestricted-file-upload-via-snews-files", "tags": ["Third Party Advisory"], "source": "disclosure@vulncheck.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-434"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-04-14T19:05:45.853", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:snewscms:snews:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6C153D59-13A1-4BB8-836C-8BAFA7A74488", "versionEndIncluding": "1.7"}], "operator": "OR"}]}], "sourceIdentifier": "disclosure@vulncheck.com"}