# CVE-2026-19899: SourceCodester Class and Exam Timetabling System SQL injection in edit_teacher.php

Source: https://junglewise.ai/threats/cve-2026-19899-sourcecodester-class-and-exam-timetabling-system-sql-injection-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-15. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-19899 · Severity: high · CVSS 7.3 · Published 2026-08-15

SourceCodester's Class and Exam Timetabling System is a web-based application for managing class schedules and exams. A SQL injection vulnerability in the edit_teacher.php file allows unauthenticated attackers to manipulate database queries, leading to unauthorized access to sensitive educational data, modification of records, or complete compromise of the system.

Technologies: [SourceCodester Class and Exam Timetabling System](https://junglewise.ai/threats/technologies/class-and-exam-timetabling-system). Vendors: [SourceCodester](https://junglewise.ai/threats/vendors/sourcecodester).

## Quick answers

**Is CVE-2026-19899 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-19899 being exploited in the wild.

**How severe is CVE-2026-19899?** High severity, with a CVSS score of 7.3, published 15 August 2026.

**Which products and versions are affected?** SourceCodester Class and Exam Timetabling System 1.0.

**Is there a fix for CVE-2026-19899?** 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-2026-19899 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-19899?** Check whether you run SourceCodester Class and Exam Timetabling 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

A SQL injection vulnerability exists in the /edit_teacher.php file where the 'id' parameter is directly concatenated into SQL queries without proper input validation or parameterized queries. The vulnerability is accessible via GET requests and requires no authentication. Attackers can inject various SQL payloads (boolean-based blind, error-based, time-based blind, UNION-based) to extract database contents, modify data, or escalate privileges. The root cause is insufficient input sanitization of user-supplied parameters. Patches should implement prepared statements with parameter binding and strict input validation.

## Affected products

- SourceCodester Class and Exam Timetabling System 1.0

## Timeline

- 2026-09-04: disclosed: Vulnerability disclosed on GitHub
- 2026-08-15: advisory: CVE-2026-19899 published

## References

- [https://github.com/endingstory/e/issues/1](https://github.com/endingstory/e/issues/1)
- [https://vuldb.com/cve/CVE-2026-19899](https://vuldb.com/cve/CVE-2026-19899)

## Related threats

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