CVE-2026-16486 SourceCodester Class and Exam Timetabling System BSIS.php cross site scripting
Remote attackers can inject malicious scripts via the day parameter in BSIS.php, potentially compromising user sessions or executing code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-16486?
CVE-2026-16486 is a medium-severity cross-site scripting vulnerability in SourceCodester Class and Exam Timetabling System, published on 21 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A vulnerability was found in SourceCodester Class and Exam Timetabling System 1.0. This affects an unknown part of the file /BSIS.php. Performing a manipulation of the argument day results in cross site scripting. The attack may be initiated remotely. The exploit has been made public and could be used.
Which versions are affected by CVE-2026-16486?
How do I fix CVE-2026-16486?
No fix has been published for CVE-2026-16486 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-16486 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-16486 exists.
Sources
Also known as GHSA-8rg2-58vp-mq6w.