CVE-2025-54294 is a critical SQL Injection (SQLi) vulnerability identified in the Komento component versions 4.0.0 through 4.0.7 for Joomla, a widely used content management system (CMS). The vulnerability arises from improper neutralization of special elements used in SQL commands (CWE-89), allowing an unauthenticated, unprivileged attacker to inject arbitrary SQL commands into the backend database. This flaw enables attackers to manipulate database queries executed by the Komento component, potentially leading to unauthorized data access, data modification, or deletion. Given the CVSS 4.0 base score of 9.3, the vulnerability is highly severe, with network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), and no user interaction needed (UI:N). The impact on confidentiality and integrity is high, while availability impact is none. The vulnerability does not require authentication or user interaction, making exploitation straightforward if the vulnerable component is exposed. Komento is a popular commenting extension for Joomla, which is extensively used for community interaction on websites. The lack of available patches at the time of publication increases the urgency for mitigation. Although no known exploits are reported in the wild yet, the critical nature and ease of exploitation make it a prime target for attackers. Organizations using Joomla with the affected Komento versions should consider this a high-priority security risk.

For European organizations, this vulnerability poses a significant risk to websites and online platforms relying on Joomla with the Komento component. Exploitation could lead to unauthorized disclosure of sensitive user data, including personal information and credentials, violating GDPR and other data protection regulations. Data integrity could be compromised, leading to defacement, misinformation, or fraudulent activities on affected sites. The ability to execute arbitrary SQL commands could also facilitate further attacks such as privilege escalation or lateral movement within the network. Given the widespread use of Joomla in Europe for government, educational, and commercial websites, the impact could extend to critical public-facing services, damaging reputation and trust. Additionally, the potential for data breaches could result in substantial financial penalties under European data protection laws. The absence of required authentication and user interaction increases the risk of automated mass exploitation campaigns targeting vulnerable Joomla installations across Europe.

Immediate mitigation steps include upgrading the Komento component to a patched version once available from stackideas.com. Until a patch is released, organizations should implement web application firewall (WAF) rules specifically designed to detect and block SQL injection attempts targeting Komento parameters. Conduct thorough code reviews and input validation enhancements for any custom Joomla extensions interacting with Komento. Restrict database user permissions associated with Joomla to the minimum necessary to limit potential damage from SQL injection. Monitor web server and application logs for unusual query patterns or error messages indicative of SQLi attempts. Employ network segmentation to isolate Joomla servers from critical backend systems. Regularly back up databases and test restoration procedures to mitigate data loss risks. Finally, raise awareness among site administrators about the vulnerability and encourage prompt action to reduce exposure time.