CVE-2025-13556 identifies a SQL injection vulnerability in Campcodes Online Polling System version 1.0, located in the /admin/checklogin.php script. The vulnerability arises from improper sanitization of the 'myusername' parameter, which is used in SQL queries without adequate validation or parameterization. This allows a remote attacker to inject malicious SQL code, potentially bypassing authentication controls, extracting sensitive data, modifying database contents, or disrupting service availability. The attack vector is network-based, requiring no authentication or user interaction, making it highly accessible to threat actors. The CVSS 4.0 vector indicates low complexity and no privileges required, with partial impact on confidentiality, integrity, and availability. Although no known exploits are currently active in the wild, the public availability of exploit code increases the likelihood of exploitation attempts. The vulnerability is limited to version 1.0 of the Campcodes Online Polling System, a product used for conducting online polls and elections, which may contain sensitive voter or organizational data. The lack of patches or official fixes at the time of publication necessitates immediate mitigation efforts by affected organizations.

For European organizations, exploitation of this vulnerability could lead to unauthorized access to sensitive polling data, manipulation of election or survey results, and potential disruption of polling services. This undermines trust in digital polling systems and could have broader political or organizational consequences, especially in countries relying on electronic voting or opinion gathering. Confidentiality breaches could expose voter identities or preferences, while integrity violations could alter poll outcomes. Availability impacts could disrupt polling operations during critical periods. Organizations involved in political processes, public administration, or market research are particularly at risk. The medium severity reflects a significant but not catastrophic risk, though the ease of remote exploitation without authentication elevates concern. The absence of known exploits currently provides a window for proactive defense, but the published exploit code increases the urgency for mitigation.

1. Immediately implement input validation and sanitization on the 'myusername' parameter in /admin/checklogin.php to prevent injection of malicious SQL code. 2. Refactor the code to use parameterized queries or prepared statements to eliminate direct concatenation of user input into SQL commands. 3. Restrict access to the /admin directory using network-level controls such as IP whitelisting, VPN access, or firewall rules to limit exposure. 4. Monitor logs for unusual or repeated access attempts targeting the 'myusername' parameter to detect potential exploitation attempts. 5. If possible, upgrade to a patched version of the Campcodes Online Polling System once available or apply vendor-provided workarounds. 6. Conduct a security audit of the entire polling system to identify and remediate other potential injection points or vulnerabilities. 7. Educate administrators on secure coding practices and the importance of timely patching. 8. Consider deploying Web Application Firewalls (WAFs) with custom rules to block SQL injection patterns targeting this parameter.