CVE-2026-13521 SourceCodester Class and Exam Timetabling System preview5.php sql injection
Remote attackers can exploit SQL injection in preview5.php to read or modify database contents in the Class and Exam Timetabling System.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-13521?
CVE-2026-13521 is a medium-severity SQL injection vulnerability in SourceCodester Class and Exam Timetabling System, published on 29 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was identified in SourceCodester Class and Exam Timetabling System 1.0/5.php. Affected by this vulnerability is an unknown functionality of the file /preview5.php. Such manipulation of the argument course_year_section leads to sql injection. The attack may be performed from remote. The exploit is publicly available and might be used.
Which versions are affected by CVE-2026-13521?
How do I fix CVE-2026-13521?
No fix has been published for CVE-2026-13521 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-13521 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-13521 exists.
Sources
Also known as GHSA-v4wv-mxfx-4g64.