# CVE-2026-90526: SourceCodester School Registration and Fee System SQL injection in save_class.php

Source: https://junglewise.ai/threats/cve-2026-90526-sourcecodester-school-registration-and-fee-system-sql-injection  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-13. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-90526 · Severity: high · CVSS 7.3 · Published 2026-09-13

SourceCodester School Registration and Fee System is a PHP-based web application used to manage student registrations and fee collection. A SQL injection vulnerability in the /bilal/save_class.php file allows unauthenticated attackers to manipulate the 'category' parameter and execute arbitrary SQL queries, potentially leading to unauthorized database access, data theft, data tampering, and complete system compromise.

Technologies: [SourceCodester School Registration and Fee System](https://junglewise.ai/threats/technologies/school-registration-and-fee-system). Vendors: [SourceCodester](https://junglewise.ai/threats/vendors/sourcecodester).

## Quick answers

**Is CVE-2026-90526 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-90526 being exploited in the wild.

**How severe is CVE-2026-90526?** High severity, with a CVSS score of 7.3, published 13 September 2026.

**Which products and versions are affected?** SourceCodester School Registration and Fee System 1.0.

**Is there a fix for CVE-2026-90526?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-90526 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-90526?** Check whether you run SourceCodester School Registration and Fee System at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This is a SQL injection vulnerability (CWE-89) in the /bilal/save_class.php file of School Registration and Fee System version 1.0. The vulnerability exists because the 'category' POST parameter is inserted directly into SQL queries without proper sanitization or parameterized query preparation. The attack vector is network-based and requires no authentication. Attackers can exploit this via boolean-based blind and time-based blind SQL injection techniques to read, modify, or delete database records. The vulnerability is publicly disclosed with proof-of-concept payloads demonstrating RLIKE-based and SLEEP-based exploitation methods available in the wild.

## Affected products

- SourceCodester School Registration and Fee System 1.0

## Timeline

- 2026-08-01: disclosed: Vulnerability disclosed publicly on GitHub
- 2026-09-13: advisory: CVE-2026-90526 published on 2026-09-13

## References

- [https://github.com/pangdudu24/cve/issues/2](https://github.com/pangdudu24/cve/issues/2)
- [https://vuldb.com/cve/CVE-2026-90526](https://vuldb.com/cve/CVE-2026-90526)

## Related threats

- [SourceCodester School Registration and Fee System SQL injection in pay_report.php](https://junglewise.ai/threats/cve-2026-90516-sourcecodester-school-registration-and-fee-system-sql-injection)
- [SourceCodester School Registration and Fee System SQL injection in delete_stud.php](https://junglewise.ai/threats/cve-2026-90515-sourcecodester-school-registration-and-fee-system-sql-injection)
- [SourceCodester School Registration and Fee System SQL injection](https://junglewise.ai/threats/cve-2026-90514-sourcecodester-school-registration-and-fee-system-sql-injection)