CVE-2023-53950

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.

CVSS v4.0

9.3 CRITICALCVSS: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

CVSS v3.1

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

EPSS

0.64% chance of exploitation in the next 30 days, 48th percentile

Published

2025-12-19

Updated

2026-05-14

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/51362

References

• CVE Record
• NVD entry

Related

• CVE-2023-53949
• CVE-2023-53951
• CVE-2023-53948
• CVE-2023-53952
• CVE-2023-53947
• CVE-2023-53953