CVE-2023-53926: SQL Injection in PHPJabbers Simple CMS

The SQL injection vulnerability in PHPJabbers Simple CMS poses a significant threat to data security. An attacker could leverage this flaw to extract sensitive information stored within the database, such as user credentials, personal data, or application configuration details. Beyond data extraction, the attacker could potentially modify or delete data, leading to data corruption or denial of service. Successful exploitation could also facilitate privilege escalation, allowing the attacker to gain administrative access to the CMS and potentially the entire server. The impact is amplified if the database contains sensitive information or is connected to other critical systems.

1. Reserved2025-12-16
2. Published2025-12-17
3. Modified2026-04-07
4. EPSS updated2026-03-23

The primary mitigation for CVE-2023-53926 is to upgrade to a patched version of PHPJabbers Simple CMS as soon as it becomes available. Until a patch is released, consider implementing temporary workarounds to reduce the attack surface. These may include restricting access to the index.php endpoint, implementing strict input validation on the 'column' parameter to prevent SQL injection attempts, and using a Web Application Firewall (WAF) with SQL injection protection rules. Monitor application logs for suspicious SQL queries and unusual database activity. After upgrade, confirm the vulnerability is resolved by attempting a SQL injection payload on the 'column' parameter and verifying that it is properly sanitized.