CVE-2025-26776 CRITICAL

CVE-2025-26776: WordPress Chaty Pro Plugin <= 3.3.3 - Arbitrary File Upload vulnerability

Vendor Notfound

Product Chaty Pro

Weakness CWE-434 · Unrestricted file upload

Published February 22, 2025

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

10.0/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality High

Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/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 NotFound Chaty Pro allows Upload a Web Shell to a Web Server. This issue affects Chaty Pro: from n/a through 3.3.3.

Explanation of Vulnerability in Simple Terms

02Summary

Chaty Pro versions up to 3.3.3 allow unauthenticated attackers to upload arbitrary files to the server without restriction. An attacker can upload malicious files—such as PHP scripts—to gain control of the site. No user interaction or authentication is required. This vulnerability affects the entire system and can lead to complete compromise.

What an attacker can do

03Attacker Capabilities

Upload arbitrary files (including PHP scripts) to the server and run code on the site.

Potential impact on your site

04Site Impact

Complete site compromise: attackers can run code, steal data, modify content, or take the site offline.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

February 22, 2025 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2025-26776 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/434.html AskarLabs — CWE-434 write-up Unrestricted Upload of File with Dangerous Type

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