Arbitrary file upload in Sh1zen Multi Uploader For Gravity Forms

CVE-2025-23921

Unrestricted Upload of File with Dangerous Type vulnerability in sh1zen Multi Uploader for Gravity Forms gf-multi-uploader allows Upload a Web Shell to a Web Server.This issue affects Multi Uploader for Gravity Forms: from n/a through <= 1.1.3.

Vulnerability class: Unrestricted File Upload

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (42.3th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-23921: held from 0.005 to 0.005.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-23921?
CVE-2025-23921 is a critical-severity vulnerability in Sh1zen Multi Uploader For Gravity Forms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.0/10. Published 2025-01-22.
How severe is CVE-2025-23921?
Critical severity. CVSS v3 base score is 9.0 out of 10.
Is CVE-2025-23921 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.