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Tronclass developed by WisdomGarden has a Insecure Direct Object Reference vulnerability. After obtaining a course ID, authenticated remote attackers to modify a specific parameter to obtain a course invitation code, thereby joining any course.

The vulnerability identified as CVE-2026-2997 affects WisdomGarden's Tronclass educational platform. It is an instance of CWE-639, an authorization bypass caused by insecure direct object references (IDOR). Specifically, after an attacker authenticates, they can obtain a valid course ID and then modify a parameter in requests to retrieve the course invitation code for any course. This unauthorized access allows the attacker to join courses without legitimate enrollment or permission. The vulnerability arises because the application fails to properly verify that the authenticated user is authorized to access the requested course invitation code, relying instead on user-controlled input to identify the course. The CVSS 3.1 base score of 5.4 reflects that the attack vector is network-based (AV:N), requires low attack complexity (AC:L), and requires privileges (PR:L) but no user interaction (UI:N). The impact affects confidentiality and integrity at a low level, as unauthorized users can access invitation codes and join courses, potentially exposing course content or disrupting course membership integrity. No availability impact is noted. The affected version is listed as 0, indicating an early or initial release of the product. No patches or known exploits have been reported at the time of publication. The vulnerability was assigned and published by TW-CERT on February 23, 2026.

Detailed information about CVE-2026-2997: CWE-639 Authorization Bypass Through User-Controlled Key in WisdomGarden Tronclass affecting WisdomGarden Tronclass. G

CVE-2026-2997: CWE-639 Authorization Bypass Through User-Controlled Key in WisdomGarden Tronclass - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2026-2997: CWE-639 Authorization Bypass Through User-Controlled Key in WisdomGarden Tronclass

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