| Title | SourceCodester Class and Exam Timetabling System 1.0 Improper Access Controls |
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| Description | SourceCodester Class and Exam Timetabling System 1.0 is vulnerable to an authenticated Broken Access Control flaw caused by missing server-side authorization checks in the user account update functionality (/admin/edit_user_account.php). The endpoint authorizes requests solely based on the presence of a valid authenticated session and does not verify whether the authenticated user is permitted to modify the specified account. Consequently, a low-privileged CIT user can send a crafted HTTP POST request using their own valid PHPSESSID cookie to update arbitrary user accounts by specifying the target user's identifier (e.g., id=4, username). This allows modification of administrator account attributes, including resetting the administrator's password, resulting in privilege escalation and full administrative compromise of the application. |
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| Source | ⚠️ https://github.com/Greejith-k/SourceCodester-Class-and-Exam-Timetabling-System-1.0-CVE-2026-/tree/main |
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| User | Greejith (UID 99578) |
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| Submission | 07/07/2026 09:35 (2 months ago) |
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| Moderation | 08/22/2026 19:51 (2 months later) |
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| Status | Accepted |
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| VulDB entry | 394515 [SourceCodester Class and Exam Timetabling System 1.0 User Account Update edit_user_account.php id/username improper authorization] |
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| Points | 20 |
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