CVE-2025-22929 is a critical SQL injection vulnerability identified in OS4ED openSIS versions 7.0 through 9.1. The vulnerability exists in the StudentFilters.php script, specifically through the 'filter_id' parameter. SQL injection (CWE-89) vulnerabilities allow an attacker to manipulate backend SQL queries by injecting malicious input, potentially leading to unauthorized data access, data modification, or complete compromise of the database. This particular flaw requires no authentication (PR:N) and no user interaction (UI:N), making it remotely exploitable over the network (AV:N) with low attack complexity (AC:L). The vulnerability impacts confidentiality, integrity, and availability (C:H/I:H/A:H) of the affected systems. Given that openSIS is an open-source student information system widely used by educational institutions to manage sensitive student data, exploitation could lead to exposure or alteration of personal information, academic records, and administrative data. The vulnerability was reserved in January 2025 and published in April 2025, with no known exploits in the wild at the time of reporting. The absence of vendor or product-specific details in the provided data suggests that openSIS is the affected product, and the vulnerability is tied to specific versions 7.0 to 9.1. The lack of available patches at the time of publication indicates that organizations using these versions remain vulnerable until updates or mitigations are applied.

For European organizations, particularly educational institutions such as schools, colleges, and universities using openSIS, this vulnerability poses a significant risk. Exploitation could lead to unauthorized disclosure of sensitive student data, including personally identifiable information (PII), academic records, and potentially financial information. This could result in violations of GDPR and other data protection regulations, leading to legal and financial repercussions. Additionally, attackers could alter or delete critical data, disrupting educational operations and damaging institutional reputations. The vulnerability's ease of exploitation and lack of authentication requirements increase the likelihood of attacks, including automated scanning and exploitation by threat actors. Given the criticality of educational data and the reliance on openSIS for administrative functions, the impact extends beyond data loss to operational disruption and potential long-term damage to trust and compliance standing within the European education sector.

Organizations should immediately assess their use of openSIS versions 7.0 through 9.1 and prioritize upgrading to a patched version once available from OS4ED. In the absence of an official patch, implement the following mitigations: 1) Apply web application firewalls (WAFs) with custom rules to detect and block SQL injection attempts targeting the 'filter_id' parameter in StudentFilters.php. 2) Employ input validation and sanitization at the application level to restrict and validate all inputs, especially those interacting with SQL queries. 3) Restrict network access to the openSIS application to trusted IP ranges where possible, reducing exposure to external attackers. 4) Monitor logs for unusual query patterns or repeated access attempts to StudentFilters.php, indicating potential exploitation attempts. 5) Conduct a thorough security review and penetration testing focused on SQL injection vectors within openSIS deployments. 6) Educate IT and security teams about the vulnerability and ensure incident response plans are updated to address potential exploitation scenarios. 7) If feasible, temporarily disable or restrict the functionality relying on the vulnerable parameter until a patch is applied.