What is CVE-2023-4596?

CVE-2023-4596 is a critical-severity vulnerability in Incsub Forminator, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2023-08-30.

How severe is CVE-2023-4596?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2023-4596 known to be exploited?

13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Arbitrary file upload in Incsub Forminator

CVE-2023-4596

The Forminator plugin for WordPress is vulnerable to arbitrary file uploads due to file type validation occurring after a file has been uploaded to the server in the upload_post_image() function in versions up to, and including, 1.24.6. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

Vulnerability class: Unrestricted File Upload

EPSS: 0.143 (96.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Incsub Forminator
Wpmudev Forminator Forms – Contact Form, Payment Form & Custom Builder — versions 0

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

References

security@wordfence.com (Third Party Advisory)
security@wordfence.com (Exploit, VDB Entry, Third Party Advisory)
security@wordfence.com (Patch)

Frequently asked questions

What is CVE-2023-4596?: CVE-2023-4596 is a critical-severity vulnerability in Incsub Forminator, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2023-08-30.
How severe is CVE-2023-4596?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-4596 known to be exploited?: 13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.