Critical 9.8Published Dec 19, 2025

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

Updated under an hour ago (Oct 27, 2026, 8:00 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 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.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-434
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: May 13, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

innovastudio WYSIWYG Editor innovastudio:wysiwyg_editor (from the name)	through 5.4	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.