CVE-2023-53950 CRITICAL

CVE-2023-53950: InnovaStudio WYSIWYG Editor 5.4 Unrestricted File Upload via Filename Manipulation

Vendor Innovastudio
Product WYSIWYG Editor
Weakness CWE-434 · Unrestricted file upload
Published December 19, 2025
Last update May 14, 2026
View on NVD All CVEs

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

InnovaStudio WYSIWYG Editor 5.4 contains an unrestricted file upload vulnerability that allows attackers to bypass file extension restrictions through filename manipulation. Attackers can upload malicious ASP shells by using null byte techniques and alternate file extensions to circumvent upload controls in the asset manager.

Key dates

02Disclosure timeline

December 19, 2025 CVE published
May 14, 2026 Record updated