CVE-2026-11533: Student Management System Auth Bypass

CVE-2026-11533 Overview

CVE-2026-11533 affects the imvks786/student_management_system project up to commit 9599b560ad3c3b83e75d328b76bedcd489ef1f46. The flaw resides in the Student Deletion Endpoint implemented in /see.php, where manipulation of the del argument triggers improper authorization [CWE-266]. A remote attacker holding low-level privileges can invoke the endpoint to remove student records without proper permission checks. The exploit details have been disclosed publicly. The project uses a rolling release model, so no fixed version is enumerated, and the maintainer has not responded to the issue report at time of publication.

Critical Impact
Authenticated low-privilege users can remotely delete student records by manipulating the del parameter in /see.php, bypassing intended authorization boundaries.

Affected Products

imvks786/student_management_system up to commit 9599b560ad3c3b83e75d328b76bedcd489ef1f46
All rolling-release builds prior to a maintainer fix
Deployments exposing /see.php to authenticated users

Discovery Timeline

2026-06-08 - CVE-2026-11533 published to NVD
2026-06-09 - Last updated in NVD database

Technical Details for CVE-2026-11533

Vulnerability Analysis

The vulnerability is an improper authorization issue classified under [CWE-266] (Incorrect Privilege Assignment). The Student Deletion Endpoint at /see.php accepts a del parameter that identifies the student record to remove. The handler executes the deletion without verifying whether the authenticated requester holds the role required to perform administrative record removal.

Because the application is delivered as a rolling release, no patched version identifier exists. The maintainer has not acknowledged the GitHub issue, leaving operators of forked or self-hosted deployments without an upstream fix. Public disclosure of the exploit raises the practical likelihood of opportunistic abuse against exposed instances.

Root Cause

The root cause is missing server-side authorization on a state-changing operation. The endpoint trusts the session's authenticated status without confirming that the caller has rights over the target record. Authorization checks belong on every privileged operation, not solely at the login boundary.

Attack Vector

The attack is network-reachable and requires only low privileges. An attacker with a valid low-tier account submits a crafted request to /see.php supplying a del value referencing any student identifier. The server processes the deletion, producing data integrity and availability impact on the affected records. No user interaction is required.

No verified exploit code is available in vetted sources. See the GitHub Issue #4 and VulDB CVE-2026-11533 entry for the public disclosure details.

Detection Methods for CVE-2026-11533

Indicators of Compromise

Unexpected HTTP requests to /see.php containing the del query parameter from low-privilege user sessions.
Database audit entries showing student record deletions outside of administrator workflows.
Spikes in DELETE-equivalent operations against the student table without corresponding admin login activity.

Detection Strategies

Enable web server access logging and alert on GET/POST requests to /see.php?del= originating from non-admin role accounts.
Correlate application audit trails with session role data to identify privilege mismatches between actor and operation.
Add database triggers or audit logging on the student table to capture the SQL principal performing each deletion.

Monitoring Recommendations

Forward web and database logs to a centralized analytics platform and build queries that surface authorization anomalies on /see.php.
Baseline normal deletion volume per role and alert on deviations exceeding the baseline.
Review GitHub issue activity on the upstream repository for vendor updates or community patches.

How to Mitigate CVE-2026-11533

Immediate Actions Required

Restrict network access to /see.php so only administrative subnets or authenticated administrators can reach it, using reverse-proxy or WAF rules.
Disable or remove the Student Deletion Endpoint until a server-side role check is added to the handler.
Rotate session secrets and audit existing accounts to remove unnecessary low-privilege users with active sessions.

Patch Information

No official patch has been released. The maintainer of imvks786/student_management_system has not responded to the public issue report. Operators must apply a local code fix that validates the requester's role before executing the deletion in /see.php, or migrate off the affected codebase. Track the GitHub Project Repository for upstream activity.

Workarounds

Add a server-side check in /see.php that verifies $_SESSION['role'] === 'admin' (or equivalent) before processing the del parameter.
Place the application behind a reverse proxy that enforces an allowlist on the /see.php path, restricted to administrator IPs.
Implement web application firewall rules that block requests to /see.php containing the del parameter when the session cookie maps to a non-admin user.
Review and prune user accounts to minimize the population of authenticated low-privilege users who could trigger the flaw.

bash

# Example nginx restriction limiting /see.php to an admin IP range
location = /see.php {
    allow 10.10.50.0/24;   # admin VLAN
    deny  all;
    include fastcgi_params;
    fastcgi_pass unix:/run/php/php-fpm.sock;
}