CVE-2023-26003 is a high-severity SQL Injection vulnerability identified in the WordPress plugin 'WP Post Corrector' developed by vipul Jariwala. The vulnerability arises due to improper neutralization of special elements in SQL commands (CWE-89), allowing an attacker with high privileges to inject malicious SQL code. The affected versions include all versions up to 1.0.2. The CVSS 3.1 base score is 7.6, indicating a high severity level. The vector string (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L) reveals that the attack can be performed remotely over the network without user interaction but requires the attacker to have high privileges (PR:H). The scope is changed (S:C), meaning the vulnerability affects resources beyond the initially vulnerable component. The impact on confidentiality is high (C:H), while integrity is not affected (I:N), and availability impact is low (A:L). Although no known exploits are currently reported in the wild, the vulnerability poses a significant risk due to the potential for data exfiltration or unauthorized data access through SQL Injection. The lack of available patches at the time of reporting increases the urgency for mitigation. The vulnerability specifically targets the WP Post Corrector plugin, which is used to correct or modify WordPress posts, implying that compromised sites could have their database contents exposed or partially leaked, especially sensitive post content or metadata stored in the database. Given the requirement for high privileges, exploitation is likely limited to authenticated users with elevated rights, such as administrators or editors, but the impact on confidentiality remains critical if exploited.

For European organizations using WordPress sites with the WP Post Corrector plugin, this vulnerability could lead to unauthorized disclosure of sensitive content stored in the WordPress database, including unpublished posts, user data, or other confidential information. The high confidentiality impact means that data breaches could occur, potentially violating GDPR regulations and resulting in legal and financial penalties. Although the vulnerability requires high privileges, insider threats or compromised administrator accounts could be leveraged to exploit this issue. The partial availability impact could cause minor disruptions but is less critical. The scope change indicates that the attack could affect other components or databases linked to the WordPress installation, potentially amplifying the damage. European organizations in sectors such as media, publishing, government, and e-commerce that rely on WordPress for content management are particularly at risk. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, especially as attackers often develop exploits rapidly after public disclosure.

1. Immediate review and restriction of user privileges within WordPress to ensure only trusted users have high-level access (administrator/editor roles). 2. Monitor and audit user activities on WordPress sites to detect any suspicious behavior from privileged accounts. 3. Disable or remove the WP Post Corrector plugin until a security patch or update is released by the vendor. 4. Implement Web Application Firewall (WAF) rules specifically targeting SQL Injection attempts against WordPress plugins, including custom rules for the WP Post Corrector plugin. 5. Regularly back up WordPress databases and site files to enable recovery in case of compromise. 6. Employ database-level protections such as least privilege database user accounts for WordPress to limit the impact of SQL Injection. 7. Stay informed on vendor updates and apply patches immediately once available. 8. Conduct penetration testing focusing on SQL Injection vectors in WordPress plugins to identify other potential vulnerabilities. 9. Consider deploying security plugins that provide real-time monitoring and alerting for suspicious SQL queries or injection attempts.