# CVE-2026-109607: SourceCodester Online Exam System SQL injection in login endpoint

Source: https://junglewise.ai/threats/cve-2026-109607-a-flaw-has-been-found-in-sourcecodester-online-exam-system-1-0  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-109607 · Severity: high · CVSS 7.3 · Published 2026-10-13

SourceCodester Online Exam System is an educational platform that manages exams, questions, and results through an administrator dashboard. An attacker can bypass admin login authentication using SQL injection in the username field, gaining full access to course management, exams, and examinee data without credentials.

Vendors: [SourceCodester](https://junglewise.ai/threats/vendors/sourcecodester).

## Quick answers

**Is CVE-2026-109607 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-109607 being exploited in the wild.

**How severe is CVE-2026-109607?** High severity, with a CVSS score of 7.3, published 13 October 2026.

**Which products and versions are affected?** SourceCodester Online Exam System With Timer 1.0 (PDO version by oretnom23, commit 11d60d3).

**Is there a fix for CVE-2026-109607?** Yes: fixed in SourceCodester Online Exam System With Timer: use prepared statements with bound parameters, remove extract($_POST), store passwords as salted hashes with constant-time comparison (as shown in advisory remediation example). Until then: Replace direct SQL concatenation with prepared statements and parameterized queries; explicitly read $_POST parameters instead of using extract(); hash passwords with password_hash() and verify with hash_equals(). Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-109607 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-109607?** Check whether you run SourceCodester Online Exam System With Timer 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.

## How to fix

- Fixed in SourceCodester Online Exam System With Timer: use prepared statements with bound parameters, remove extract($_POST), store passwords as salted hashes with constant-time comparison (as shown in advisory remediation example)

Replace direct SQL concatenation with prepared statements and parameterized queries; explicitly read $_POST parameters instead of using extract(); hash passwords with password_hash() and verify with hash_equals().

## Technical details

The login endpoint in adminpanel/admin/query/loginExe.php concatenates unsanitized POST parameters (username and password) directly into a SQL SELECT query without prepared statements or escaping. An attacker can inject SQL metacharacters such as ' OR '1'='1' -- - to bypass authentication and establish an admin session. The vulnerability is pre-authentication and network-accessible, requiring no user interaction or valid credentials.

## Affected products

- SourceCodester Online Exam System With Timer 1.0 (PDO version by oretnom23, commit 11d60d3)

## Timeline

- 2026-09-25: disclosed: Advisory published; live PoC demonstrated in lab (PHP 8.3 + MariaDB)
- 2026-10-13: advisory

## References

- [https://tracexlabs.com/releases/online-exam-sqli-admin.html](https://tracexlabs.com/releases/online-exam-sqli-admin.html)
- [https://vuldb.com/cve/CVE-2026-109607](https://vuldb.com/cve/CVE-2026-109607)