CVE-2016-20052

9.3 criticalEPSS 1.0%

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.

Severity

CVSS 4.0

9.3 critical

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

CVSS 3.1

9.8 critical

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

EPSS: 1.0% chance of exploitation in the next 30 days; higher than 61% of CVEs (scores of 2026-10-31)
CWE: CWE-434
Published: 2026-04-04
Modified: 2026-07-21
Record from: the NVD, synced 2026-10-19

Affected

snewscms:snews

References

https://www.exploit-db.com/exploits/40706
https://www.vulncheck.com/advisories/snews-cms-unrestricted-file-upload-via-snews-files

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