CVE-2025-6861 is a SQL Injection vulnerability identified in version 1.0 of the SourceCodester Best Salon Management System, specifically affecting the /panel/add_plan.php endpoint. The vulnerability arises from improper sanitization and validation of user-supplied input parameters: plan_name, description, duration_days, and price. An attacker can manipulate these parameters to inject malicious SQL code, which the backend database executes. This can lead to unauthorized data access, data modification, or even complete compromise of the database. The vulnerability is remotely exploitable without requiring user interaction or authentication, as indicated by the CVSS vector (AV:N/AC:L/AT:N/UI:N/PR:L). However, a low level of privileges (PR:L) is required, suggesting that the attacker must have some authenticated access, possibly as a low-privileged user. The CVSS 4.0 base score is 5.3, categorized as medium severity, reflecting limited impact on confidentiality, integrity, and availability, and the presence of some mitigating factors such as required privileges and limited scope. No public exploits are known to be actively used in the wild yet, but the exploit details have been disclosed publicly, increasing the risk of future exploitation. The lack of available patches or vendor advisories at this time heightens the urgency for organizations using this system to implement mitigations. The vulnerability could allow attackers to extract sensitive customer or business data, alter pricing or service plans, or disrupt salon management operations, potentially causing financial and reputational damage.

For European organizations using the SourceCodester Best Salon Management System version 1.0, this vulnerability poses a tangible risk to the confidentiality and integrity of their business data. Salons and related service providers could face unauthorized disclosure of client information, including personal and payment details, leading to privacy violations under GDPR. Data tampering could disrupt service offerings, pricing, and scheduling, impacting business continuity and customer trust. Although the vulnerability requires some level of authenticated access, insider threats or compromised low-privilege accounts could be leveraged by attackers to escalate damage. The medium CVSS score suggests moderate risk, but the public disclosure of exploit details increases the likelihood of exploitation attempts. European organizations with limited cybersecurity resources or lacking timely patch management may be particularly vulnerable. Additionally, the absence of vendor patches means organizations must rely on compensating controls to mitigate risk until an official fix is available.

1. Restrict access to the /panel/add_plan.php endpoint to trusted and authenticated users only, implementing strict access controls and monitoring. 2. Employ Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection patterns targeting the vulnerable parameters (plan_name, description, duration_days, price). 3. Conduct thorough input validation and sanitization on all user-supplied data, ideally using parameterized queries or prepared statements to prevent SQL injection. 4. Monitor application logs and database queries for anomalous activities indicative of injection attempts. 5. Implement multi-factor authentication (MFA) to reduce the risk of credential compromise leading to exploitation. 6. Isolate the salon management system within a segmented network zone to limit lateral movement in case of compromise. 7. Regularly back up critical data and test restoration procedures to ensure resilience against data tampering or loss. 8. Engage with the vendor or community to track patch releases and apply updates promptly once available. 9. Educate staff about phishing and credential security to minimize the risk of account compromise that could facilitate exploitation.