What is CVE-2023-51412?

CVE-2023-51412 is a critical-severity vulnerability in Piotnet Forms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.0/10. Published 2023-12-29.

How severe is CVE-2023-51412?

Critical severity. CVSS v3 base score is 9.0 out of 10.

Is CVE-2023-51412 known to be exploited?

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

Arbitrary file upload in Piotnet Forms

CVE-2023-51412

Unrestricted Upload of File with Dangerous Type vulnerability in Piotnet Piotnet Forms.This issue affects Piotnet Forms: from n/a through 1.0.25.

Vulnerability class: Unrestricted File Upload

Published 2023-12-29 · last modified 2026-06-17.

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 (43.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

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

Affected products

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

20142995/nuclei-templates

References

patchstack.com/database/vulnerability/piotnetforms/wordpress-piotnetforms-plugi… (Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2023-51412?: CVE-2023-51412 is a critical-severity vulnerability in Piotnet Forms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.0/10. Published 2023-12-29.
How severe is CVE-2023-51412?: Critical severity. CVSS v3 base score is 9.0 out of 10.
Is CVE-2023-51412 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.