CVE-2026-5150 is a SQL injection vulnerability identified in version 1.0 of the code-projects Accounting System. The flaw exists in the /viewin_costumer.php file within the Parameter Handler component, where the cos_id parameter is improperly sanitized or validated. This improper handling allows an attacker to inject arbitrary SQL commands remotely, without requiring authentication or user interaction. The vulnerability can be exploited by crafting malicious requests that manipulate the cos_id parameter to alter backend SQL queries, potentially exposing sensitive data, modifying database contents, or disrupting normal operations. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and low impact on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). The vulnerability has been publicly disclosed but no known exploits have been reported in the wild yet. The absence of patches or official fixes at the time of disclosure increases the urgency for organizations to implement compensating controls. The vulnerability primarily threatens the confidentiality and integrity of database information managed by the accounting system, which may include financial records, customer data, and transactional details. Given the critical nature of accounting data, exploitation could lead to financial fraud, data leakage, or operational disruptions.

The SQL injection vulnerability in code-projects Accounting System 1.0 can have significant consequences for organizations relying on this software. Successful exploitation may allow attackers to extract sensitive financial and customer data, modify accounting records, or disrupt system availability. This could lead to financial losses, regulatory non-compliance, reputational damage, and operational downtime. Since the vulnerability requires no authentication and can be triggered remotely, the attack surface is broad, increasing the likelihood of exploitation especially after public disclosure. Organizations in sectors such as finance, retail, and services using this accounting system are particularly at risk. The medium severity rating reflects the moderate impact on confidentiality, integrity, and availability, but the ease of exploitation and lack of required privileges elevate the threat level. Additionally, the absence of known patches means organizations must rely on mitigations until an official fix is available.

To mitigate CVE-2026-5150, organizations should first verify if they are running code-projects Accounting System version 1.0 and immediately restrict access to the /viewin_costumer.php endpoint, ideally limiting it to trusted internal networks. Implementing a Web Application Firewall (WAF) with rules to detect and block SQL injection attempts targeting the cos_id parameter can provide an effective temporary defense. Input validation and sanitization should be enforced at the application level, ensuring that cos_id accepts only expected numeric or predefined values. Monitoring and logging of suspicious requests to this endpoint should be enhanced to detect potential exploitation attempts early. Organizations should engage with the vendor for patches or updates and apply them promptly once available. Additionally, conducting regular security assessments and penetration testing focusing on SQL injection vectors will help identify and remediate similar vulnerabilities proactively. Backup critical accounting data regularly and ensure incident response plans are updated to handle potential data breaches.