# CVE-2026-121501: mathurvishal CloudClassroom-PHP-Project session fixation in login

Source: https://junglewise.ai/threats/cve-2026-121501-a-vulnerability-was-determined-in-mathurvishal-cloudclassroom  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-03. Updated: 2026-11-03  
License: CC BY 4.0 with a link back

CVE-2026-121501 · Severity: medium · CVSS 6.3 · Published 2026-11-03

CloudClassroom-PHP-Project is an educational platform for classroom management. The login handlers fail to regenerate session IDs after authentication, allowing an attacker to hijack a victim's account by fixing their session ID before they log in and then gaining full access to their student, teacher, or administrator account once they authenticate.

Technologies: [Mathurvishal CloudClassroom PHP Project](https://junglewise.ai/threats/technologies/mathurvishal-cloudclassroom-php-project). Vendors: [Mathurvishal](https://junglewise.ai/threats/vendors/mathurvishal).

## Quick answers

**Is CVE-2026-121501 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-121501 being exploited in the wild.

**How severe is CVE-2026-121501?** Medium severity, with a CVSS score of 6.3, published 3 November 2026.

**Which products and versions are affected?** Mathurvishal CloudClassroom PHP Project 1.0 and prior.

**Is there a fix for CVE-2026-121501?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-121501 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-121501?** Check whether you run Mathurvishal CloudClassroom PHP Project at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

Session fixation vulnerability in loginlinkadmin.php, loginlinkfaculty.php, and loginlinkstudent.php components: the login handlers call session_start() but do not call session_regenerate_id(), so a pre-login session ID is promoted to an authenticated session. An attacker can fix a victim's PHPSESSID cookie, and after the victim logs in, the attacker's cookie becomes associated with the authenticated account. No fix is available; vendor did not respond to disclosure.

## Affected products

- mathurvishal CloudClassroom-PHP-Project 1.0 and prior

## Timeline

- 2026-02-08: disclosed
- 2026-11-03: advisory

## References

- [https://github.com/rmsbpro/Advisory/blob/main/session-fixation.md](https://github.com/rmsbpro/Advisory/blob/main/session-fixation.md)
- [https://vuldb.com/cve/CVE-2026-121501](https://vuldb.com/cve/CVE-2026-121501)

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