CVE-2026-10811: SQL Injection in itsourcecode Fees Management System 1.0

Technical summary

CVE-2026-10811 is a SQL injection vulnerability (CWE-89) combined with improper input validation (CWE-74) in itsourcecode Fees Management System 1.0. The vulnerable code path is /receipt.php, where the ef_id argument is passed to a SQL query without proper sanitization or parameterized statements. The CVSS 3.1 score of 6.3 (Medium) reflects that the attack requires authentication (PR:L), but carries impact across confidentiality, integrity, and availability once a valid user account is compromised. The attack vector is network-based with low complexity.

Business impact

Organizations deploying this fees management system face direct data breach risk affecting financial records. An authenticated user—whether a compromised employee or insider threat—can exfiltrate sensitive payment data, modify transaction records, or corrupt the database entirely. For organizations handling student fees, tuition payments, or other receivables, this translates to potential financial reporting inaccuracies, compliance violations, and loss of customer trust.

Affected systems

itsourcecode Fees Management System version 1.0 is affected. No other versions are mentioned in the vulnerability record, though you should verify with the vendor whether earlier or later versions contain the same flaw. If this product is used in multi-tenant or SaaS deployments, all instances on vulnerable versions are at risk.

Exploitability

The vulnerability is more likely to be exploited because proof-of-concept details have been publicly disclosed. The attack requires an authenticated session, which limits opportunistic attacks but does not prevent compromise by insiders, compromised accounts, or attackers who have obtained valid credentials. SQL injection against an unauthenticated endpoint would be higher risk; authentication here raises the barrier slightly but does not eliminate practical threat.

Remediation

Immediate action is required. Contact itsourcecode for a patched version addressing CVE-2026-10811. In the interim, implement strict input validation on the ef_id parameter, use parameterized queries or prepared statements instead of string concatenation, and restrict access to /receipt.php to users with genuine business need. Run a database audit to detect any unauthorized modifications or data exfiltration that may have already occurred.

Patch guidance

Check the itsourcecode vendor advisory and security portal for an updated version of Fees Management System that resolves the SQL injection in /receipt.php. Verify that the patch specifically addresses the ef_id parameter sanitization. Test the patched version in a non-production environment before rollout to production systems. If no patch has been released, escalate with the vendor for a timeline.

Detection guidance

Monitor /receipt.php access logs for suspicious ef_id values containing SQL metacharacters (single quotes, semicolons, comment syntax such as -- or /**/). Enable SQL query logging at the database layer to detect injection attempts. Use Web Application Firewalls (WAF) rules to block common SQL injection patterns in the ef_id parameter. Review database audit logs for unauthorized queries or data access patterns that correlate with the vulnerability disclosure date (June 4, 2026 or earlier).

Why prioritize this

Although rated CVSS Medium, this vulnerability merits rapid remediation because it is publicly disclosed, affects financial systems with sensitive data, and requires only valid credentials to exploit. The combination of authentication requirement and confirmed exploitation availability makes it a medium-term priority: address it before attackers systematically compromise user accounts.

Risk score, explained

The CVSS 3.1 score of 6.3 reflects a network-accessible, low-complexity attack that requires low-privilege authentication. The partial impact on confidentiality, integrity, and availability reflects database-level compromise potential. The Medium severity is appropriate because the attack is not unauthenticated and does not grant immediate administrative control, but the scope remains unchanged (impact is within the affected component only).

Frequently asked questions