CVE-2025-47550 MEDIUM

CVE-2025-47550: WordPress Instantio plugin <= 3.3.16 - Arbitrary File Upload Vulnerability

Vendor Themefic
Product Instantio
Weakness CWE-434 · Unrestricted file upload
Published May 7, 2025
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

6.6/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Unrestricted Upload of File with Dangerous Type vulnerability in Themefic Instantio instantio allows Upload a Web Shell to a Web Server.This issue affects Instantio: from n/a through <= 3.3.16.

Explanation of Vulnerability in Simple Terms

02Summary

Instantio versions up to 3.3.16 allow authenticated administrators to upload files without proper validation. An attacker with admin privileges can upload malicious files that may affect the site's confidentiality, integrity, or availability. Update to version 3.3.17 or later to remediate this vulnerability.

What an attacker can do

03Attacker Capabilities

Upload files without validation to compromise site confidentiality, integrity, or availability.

Potential impact on your site

04Site Impact

An admin account compromise could allow file uploads that damage your site's data or function.

Conditions required to exploit

05Prerequisites

Attacker must have administrator-level access to the site.

Key dates

06Disclosure timeline

May 7, 2025 CVE published
April 28, 2026 Record updated