CVE-2026-42740 CRITICAL

CVE-2026-42740: WordPress Tainacan plugin <= 1.0.3 - SQL Injection vulnerability

Vendor Tainacan
Product Tainacan
Weakness CWE-89 · SQLi
Published May 27, 2026
Last update May 27, 2026

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in tainacan Tainacan tainacan allows Blind SQL Injection.This issue affects Tainacan: from n/a through <= 1.0.3.

Explanation of Vulnerability in Simple Terms

02Summary

Tainacan versions 1.0.3 and earlier contain a SQL injection vulnerability in an unspecified component. An attacker with network access can craft malicious input to execute arbitrary SQL queries, potentially reading sensitive data from the database. The vulnerability requires no authentication or user interaction. Upgrade to version 1.1.0 or later.

What an attacker can do

03Attacker Capabilities

Read sensitive data from the site's database by injecting malicious SQL commands.

Potential impact on your site

04Site Impact

Attackers can extract user data, credentials, and other sensitive information stored in your database.

Conditions required to exploit

05Prerequisites

Network access to the vulnerable Tainacan instance; no authentication required.

Key dates

06Disclosure timeline

May 27, 2026 CVE published
May 27, 2026 Record updated

Related vulnerabilities

08Related CVE