Attack Chain

1. Discovery: An attacker identifies an internet-facing instance of Inrove BiEticaret software running a vulnerable version (prior to v3.3.57).
2. Vulnerability Probing: The attacker sends carefully crafted HTTP requests to various web application endpoints, systematically testing common parameters (e.g., product IDs, search queries, login fields) for SQL injection vulnerabilities using known payloads.
3. Authentication Bypass: Upon identifying a susceptible parameter, the attacker injects malicious SQL statements (e.g., ' OR 1=1 --, ' UNION SELECT NULL,password,NULL FROM users --) to bypass login forms or other authentication mechanisms.
4. Information Disclosure: With unauthorized access, the attacker leverages further SQL injection techniques to extract sensitive information from the database, including database schema, user credentials, session tokens, and other confidential application data.
5. Data Exfiltration: The extracted sensitive data, such as customer records, payment details, or proprietary business information, is then systematically exfiltrated from the compromised database.
6. Privilege Escalation / Remote Code Execution: If the underlying database user account has elevated privileges and the database system (e.g., Microsoft SQL Server, MySQL) is configured to allow it, the attacker may exploit functions like xp_cmdshell or LOAD_FILE/INTO OUTFILE to execute arbitrary operating system commands or write web shells onto the server.
7. Persistence: The attacker establishes persistent access to the compromised server, potentially by deploying web shells, creating new user accounts, or modifying existing system configurations.
8. Impact: The attacker maintains control over the application and underlying server for further malicious activities, including lateral movement, data tampering, or use as a C2 staging point.

Impact

Successful exploitation of CVE-2026-5955 grants unauthenticated attackers extensive control over the affected BiEticaret application's database. This directly leads to severe data breaches, compromising sensitive customer information, financial data, and intellectual property. Beyond data theft, attackers can manipulate critical business data, disrupt operations by tampering with product catalogs or order statuses, and potentially gain full remote code execution on the hosting server. Such compromises can result in significant financial losses, reputational damage, legal liabilities, and regulatory penalties for affected organizations. The critical CVSS score of 9.8 indicates the highest severity, signifying a complete compromise of confidentiality, integrity, and availability.

Recommendation

• Immediately update Inrove BiEticaret to version v3.3.57 or newer to remediate CVE-2026-5955.
• Deploy the Sigma rule provided in this brief to your SIEM/webserver log analysis platform to detect and alert on attempts to exploit this SQL injection vulnerability.
• Review web application firewall (WAF) configurations to ensure robust SQL injection prevention rules are enabled and tuned for your environment, specifically looking for common SQLi patterns in URL paths and query parameters.
• Conduct regular security audits and penetration tests on your BiEticaret instance to identify and address similar input validation vulnerabilities.