CVE-2021-47783 MEDIUM

CVE-2021-47783: Phpwcms 1.9.30 - Arbitrary File Upload

Vendor Phpwcms
Product Phpwcms
Weakness CWE-434 · Unrestricted file upload
Published January 15, 2026
Last update April 7, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

Phpwcms 1.9.30 contains a file upload vulnerability that allows authenticated attackers to upload malicious SVG files with embedded JavaScript. Attackers can upload crafted SVG payloads through the multiple file upload feature to potentially execute cross-site scripting attacks on the platform.

Key dates

02Disclosure timeline

January 15, 2026 CVE published
April 7, 2026 Record updated