CVE-2026-100876 mathurvishal CloudClassroom-PHP-Project loginlinkstudent.php missing authentication
Attackers can bypass authentication in the student login link to access accounts and data without credentials.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-100876?
CVE-2026-100876 is a medium-severity missing authorization vulnerability in mathurvishal CloudClassroom-PHP-Project, published on 27 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was found in mathurvishal CloudClassroom-PHP-Project up to 5dadec098bfbbf3300d60c3494db3fb95b66e7be. Affected is an unknown function of the file loginlinkstudent.php. Performing a manipulation of the argument umail results in missing authentication. Remote exploitation of the attack is possible. The exploit has been made public and could be used. This product follows a rolling release approach for continuous delivery, so version details for affected or updated releases are not provided. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-100876?
How do I fix CVE-2026-100876?
No fix has been published for CVE-2026-100876 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-100876 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-100876 exists.
Sources
Also known as GHSA-3xr8-56j6-mxh4.