CVE-2025-54693 CRITICAL

CVE-2025-54693: WordPress Form Block Plugin <= 1.5.5 - Arbitrary File Upload Vulnerability

Vendor Epiphyt
Product Form Block
Weakness CWE-434 · Unrestricted file upload
Published August 14, 2025
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

9.0/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

Unrestricted Upload of File with Dangerous Type vulnerability in epiphyt Form Block form-block allows Upload a Web Shell to a Web Server.This issue affects Form Block: from n/a through <= 1.5.5.

Explanation of Vulnerability in Simple Terms

02Summary

Form Block versions up to 1.5.5 allow unauthenticated attackers to upload files without restriction. An attacker can upload malicious files to the site over the network, potentially gaining control of the server. The vulnerability requires specific conditions to exploit but can affect confidentiality, integrity, and availability of the entire site.

What an attacker can do

03Attacker Capabilities

Upload malicious files to the site without authentication, potentially executing code on the server.

Potential impact on your site

04Site Impact

Attackers could upload and execute malicious code, compromising the entire site and any data it contains.

Conditions required to exploit

05Prerequisites

Network access to the site; no authentication or user interaction required, though exploitation complexity is high.

Key dates

06Disclosure timeline

August 14, 2025 CVE published
April 28, 2026 Record updated