CVE-2026-5643 Cyber-III Student-Management-System Admin Add Endpoint notice.php cross site scripting
Remote attackers can execute arbitrary scripts via the admin notice endpoint, potentially compromising user accounts and session data.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-5643?
CVE-2026-5643 is a medium-severity cross-site scripting vulnerability in Cyber-III Student-Management-System, published on 6 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
A vulnerability was identified in Cyber-III Student-Management-System up to 1a938fa61e9f735078e9b291d2e6215b4942af3f. This impacts an unknown function of the file /admin/Add%20notice/notice.php of the component Admin Add Endpoint. Such manipulation of the argument $_SERVER['PHP_SELF'] leads to cross site scripting. It is possible to launch the attack remotely. The exploit is publicly available and might be used. This product takes the approach of rolling releases to provide continious delivery. Therefore, version details for affected and updated releases are not available. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-5643?
How do I fix CVE-2026-5643?
No fix has been published for CVE-2026-5643 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-2026-5643 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5643 exists.
Sources
Also known as GHSA-fwhv-4w7x-fj6c.