CVE-2025-12261 is a SQL injection vulnerability identified in version 1.0 of the CodeAstro Gym Management System, specifically within the /admin/actions/remove-announcement.php script. The vulnerability stems from improper handling of the 'ID' parameter, which is used in SQL queries without adequate sanitization or parameterization. This flaw allows a remote attacker to inject malicious SQL code by manipulating the 'ID' argument, potentially enabling unauthorized access to or modification of the backend database. The attack vector is network-based, requiring no authentication or user interaction, which significantly lowers the barrier to exploitation. The vulnerability has a CVSS 4.0 base score of 5.3, indicating a medium severity level, with partial impact on confidentiality, integrity, and availability. Although no confirmed exploits are reported in the wild, the exploit code has been publicly disclosed, increasing the likelihood of exploitation attempts. The affected product is used for managing gym operations, including announcements and administrative tasks, making the integrity and confidentiality of stored data critical. The lack of patches or official remediation guidance necessitates immediate defensive measures. This vulnerability exemplifies the risks posed by insufficient input validation and the importance of secure coding practices in web applications, especially those managing sensitive business data.

For European organizations using CodeAstro Gym Management System 1.0, this vulnerability poses a risk of unauthorized database access or manipulation, potentially leading to data breaches involving sensitive customer or business information. The integrity of gym management data, such as announcements, schedules, or membership records, could be compromised, disrupting operations and damaging reputation. Confidentiality breaches may expose personal data, raising compliance concerns under GDPR. Availability could also be affected if attackers execute destructive SQL commands. Given the remote and unauthenticated nature of the exploit, attackers can target internet-facing administrative endpoints without needing credentials, increasing the attack surface. The medium severity rating reflects partial but meaningful impacts on confidentiality, integrity, and availability. Organizations may face operational disruptions, regulatory penalties, and loss of customer trust if the vulnerability is exploited.

1. Immediately restrict access to the /admin/actions/remove-announcement.php endpoint using network-level controls such as IP whitelisting or VPN-only access to limit exposure. 2. Implement strict input validation and sanitization on the 'ID' parameter, ensuring only expected numeric or alphanumeric values are accepted. 3. Refactor the application code to use parameterized queries or prepared statements to prevent SQL injection. 4. Conduct a comprehensive code review of all input handling in the application to identify and remediate similar vulnerabilities. 5. Monitor web server and database logs for suspicious activity related to the vulnerable endpoint. 6. If possible, isolate the affected system from public networks until a secure patch or update is available. 7. Engage with the vendor or community to obtain or develop an official patch. 8. Educate administrative users on security best practices and the importance of reporting anomalies. 9. Consider deploying web application firewalls (WAFs) with rules to detect and block SQL injection attempts targeting this endpoint. 10. Regularly back up critical data and verify restoration procedures to mitigate potential data loss.