CVE-2023-53950

9.3 criticalEPSS 0.7%

Critical (9.3). EPSS 0.7% chance of exploitation in the next 30 days.

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.

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: 0.7% chance of exploitation in the next 30 days; higher than 51% of CVEs (scores of 2026-10-31)
CWE: CWE-434
Published: 2025-12-19
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

https://innovastudio.com
https://www.exploit-db.com/exploits/51362
https://www.vulncheck.com/advisories/innovastudio-wysiwyg-editor-unrestricted-file-upload-via-filename-manipulation

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