SQL Injection Vulnerability in Library Management System Plugin by WordPress
CVE-2026-18666

4.3MEDIUM

Key Information:

Vendor

WordPress
Status
Library Management System
Vendor
CVE Published:
10 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-18666?

The Library Management System plugin for WordPress prior to version 3.6.7 is susceptible to SQL injection attacks due to insufficient validation and sanitization of user-supplied inputs. This flaw allows users with minimal privileges, such as Subscribers, to manipulate SQL queries and potentially extract sensitive information from the database, which may include user password hashes. It is crucial for site administrators to update to the latest version to mitigate this risk.

Affected Version(s)

Library Management System 0 < 3.6.7

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-18666 - Proof of Concept

References

https://wpscan.com/vulnerability/7a9b3fff-f454-4764-ad60-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

João Ramos Maciel
WPScan
.