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2.1
CVE-2026-100876: CloudClassroom-PHP loginlinkstudent.php skips authentication
CVE-2026-100876 · published 21 days ago
Summary
The loginlinkstudent.php page in the CloudClassroom-PHP project does not properly verify a user’s email address, allowing anyone to log in as a student without a password. This can be triggered from anywhere on the internet and the technique is already publicly known. Apply the latest update from the project or add proper email‑validation checks to block the bypass.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| mathurvishal | cloudclassroom-php-project | 5dadec098bfbbf3300d60c3494db3fb95b66e7be |
Original advisory text
mathurvishal CloudClassroom-PHP-Project loginlinkstudent.php missing authentication
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.
Internet-facing
60 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit
- Gives an attacker partial control
Severity
2.1
Low
Type
CWE-306Missing Authentication for Critical Function
CWE-287Improper Authentication
Timeline
Published27 Sep 2026
Updated19 Oct 2026
First seen27 Sep 2026
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