CVE-2025-67962 in Broken Link Checker Plugin
Summary
by MITRE • 12/16/2025
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in AIOSEO Plugin Team Broken Link Checker broken-link-checker-seo allows SQL Injection.This issue affects Broken Link Checker: from n/a through <= 1.2.6.
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Analysis
by VulDB Data Team • 12/16/2025
The vulnerability identified as CVE-2025-67962 represents a critical SQL injection flaw within the Broken Link Checker component of the AIOSEO Plugin Team's Broken Link Checker plugin. This security weakness stems from improper neutralization of special elements within SQL commands, creating an avenue for malicious actors to execute unauthorized database operations. The vulnerability specifically impacts versions of the Broken Link Checker plugin ranging from the initial release through version 1.2.6, indicating a broad scope of affected systems that could potentially expose sensitive data and compromise database integrity.
The technical implementation of this vulnerability occurs when user-supplied input containing special SQL characters is not properly sanitized or escaped before being incorporated into database queries. This allows attackers to inject malicious SQL code that can manipulate the database structure, extract confidential information, modify records, or even gain administrative privileges within the affected system. The flaw operates at the application layer where input validation mechanisms fail to adequately filter or escape potentially harmful characters such as single quotes, semicolons, or comment delimiters that are fundamental to SQL command construction. This type of vulnerability maps directly to CWE-89, which specifically addresses SQL injection weaknesses in software applications.
The operational impact of this vulnerability extends beyond simple data theft to encompass potential system compromise and unauthorized access to sensitive information. Attackers could leverage this flaw to extract user credentials, personal information, or other confidential data stored within the database. The attack surface is particularly concerning given that this affects a widely used plugin component, meaning that numerous WordPress installations could be vulnerable if they have not updated to a patched version. The persistence of this vulnerability across multiple versions indicates a fundamental flaw in the input sanitization process that requires immediate attention from system administrators and security teams.
Mitigation strategies for CVE-2025-67962 must prioritize immediate plugin updates to versions that address the SQL injection vulnerability. System administrators should implement comprehensive input validation measures, including parameterized queries and prepared statements, to prevent similar issues from occurring in other components of the application. Additionally, database access controls should be reviewed and restricted to minimize potential damage from successful exploitation attempts. Network monitoring should be enhanced to detect unusual database access patterns that might indicate exploitation attempts. The remediation process should also include a thorough security audit of other plugins and themes to identify similar vulnerabilities that might exist within the WordPress environment, aligning with ATT&CK technique T1190 for exploiting vulnerabilities in web applications. Organizations should also consider implementing web application firewalls and intrusion detection systems to provide additional layers of protection against SQL injection attacks.