CVE-2025-49901 CRITICAL

CVE-2025-49901: WordPress Simple Link Directory plugin < 14.8.1 - Broken Authentication vulnerability

Vendor Quantumcloud
Product Simple Link Directory
Weakness CWE-288
Published October 22, 2025
Last update April 28, 2026

CVSS base score

9.8/10
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:U/C:H/I:H/A:H

What the vulnerability does

01Description

Authentication Bypass Using an Alternate Path or Channel vulnerability in quantumcloud Simple Link Directory qc-simple-link-directory allows Authentication Abuse.This issue affects Simple Link Directory: from n/a through < 14.8.1.

Explanation of Vulnerability in Simple Terms

02Summary

Simple Link Directory versions 14.8.1 and earlier contain an authentication bypass vulnerability that allows unauthenticated attackers to read, modify, or delete data on affected sites. The vulnerability requires no user interaction and can be exploited remotely over the network. All installations of this product should be updated immediately.

What an attacker can do

03Attacker Capabilities

Read, modify, or delete site data without logging in.

Potential impact on your site

04Site Impact

Attackers can compromise your site's data integrity and availability without any credentials.

Conditions required to exploit

05Prerequisites

Network access to the site; no authentication or user interaction required.

Key dates

06Disclosure timeline

October 22, 2025 CVE published
April 28, 2026 Record updated