CVE-2026-39466
HighCVSS 7.6Exploitation Probability (EPSS)
Low risk20th percentile - higher than 20% of all known CVEs
Summary
The Broken Link Checker plugin by WPMU DEV up to version 2.4.7 inclusive is vulnerable to Blind SQL Injection due to improper neutralization of special elements used in an SQL command.
Risk Assessment
The risk involves the possibility of executing blind SQL queries, which could lead to data leakage from the WordPress database, including user passwords and other sensitive information.
Recommendation
Immediately update the Broken Link Checker plugin to a version above 2.4.7, which contains the fix for this vulnerability.
Other vulnerabilities in Broken Link Checker
See all- CVE-2026-84772Medium
Editor Server Side Request Forgery (SSRF) in Broken Link Checker <= 2.4.14 versions.
- CVE-2026-75528High
The Broken Link Checker plugin for WordPress up to version 2.4.13 is vulnerable to Stored Cross-Site Scripting via Comment Author URL / Link Log due to insufficient input sanitization and output escaping. Unauthenticated attackers can inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires an administrator to perform the plugin's standard dismiss-and-recheck workflow on a link submitted by the attacker via the WordPress comment author URL field, after which the attacker's HTTP server issues a redirect to a URL containing an HTML/JavaScript payload that is stored verbatim in the link log.
Original NVD description (English source)
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in WPMU DEV - Your All-in-One WordPress Platform Broken Link Checker broken-link-checker allows Blind SQL Injection.This issue affects Broken Link Checker: from n/a through <= 2.4.7.