CVE-2026-121501 Details
Description
A vulnerability was determined in mathurvishal CloudClassroom-PHP-Project. The affected element is the function session_regenerate_id of the file loginlinkadmin.php. Executing a manipulation of the argument PHPSESSID can lead to session fixiation. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. The vendor was contacted early about this disclosure but did not respond in any way.
A session fixation vulnerability has been identified in the CloudClassroom PHP Project, specifically in version 1.0 and prior. The issue arises in the file loginlinkadmin.php, where the function session_regenerate_id is not properly utilized. This oversight allows an attacker to manipulate the PHPSESSID cookie, fixing it in the victim's browser. As a result, the attacker can assume the victim's identity after they log in. The vulnerability can be exploited remotely, and has been publicly disclosed.
No official fix is available for this vulnerability as of now. However, it is recommended to call session_regenerate_id(true) after successful authentication, set the cookie attributes to HttpOnly, Secure, and SameSite=Strict, and destroy the session on logout.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 3, 2026CISA-ADP
Assessed Nov 7, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/rmsbpro/Advisory/blob/main/session-fixation.md | [email protected] | AdvisoryExploitRemedy |
| https://vuldb.com/cve/CVE-2026-121501 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/1019357 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/430283 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/430283/cti | [email protected] | AdvisoryContent Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-384 | Session Fixation | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| mathurvishal CloudClassroom-PHP-Project | 1.0 |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 7, 2026 | CVE Modified | CISA-ADP |
| Nov 3, 2026 | New CVE Received | [email protected] |