CVE-2026-25806: Placipy Auth Bypass Vulnerability

CVE-2026-25806 Overview

PlaciPy is a placement management system designed for educational institutions. A Missing Authorization vulnerability exists in version 1.0.0 where multiple API endpoints in backend/src/routes/student.routes.ts only enforce authentication but fail to implement proper authorization checks. Specifically, the GET /api/students/:email, PUT /api/students/:email/status, and DELETE /api/students/:email routes do not verify whether the authenticated user owns the student record being accessed, has an administrative or staff role, or is permitted to modify or delete the target student.

Critical Impact

Any authenticated user can access, modify, or delete any student record in the system regardless of their actual permissions, leading to potential unauthorized data exposure and manipulation of student placement records.

Affected Products

• Prasklatechnology PlaciPy version 1.0.0

Discovery Timeline

• 2026-02-09 - CVE CVE-2026-25806 published to NVD
• 2026-02-11 - Last updated in NVD database

Technical Details for CVE-2026-25806

Vulnerability Analysis

This vulnerability is classified as CWE-862 (Missing Authorization), a common but serious security flaw in web applications. The issue stems from a fundamental architectural oversight where the application correctly implements authentication via the authenticateToken middleware but completely omits authorization logic that should restrict access based on user roles and ownership.

In the context of a placement management system for educational institutions, this vulnerability is particularly concerning as it handles sensitive student data including personal information, placement status, and academic records. An authenticated user—regardless of whether they are a student, staff member, or administrator—can interact with any student record in the database simply by knowing or guessing the email address parameter in the URL.

The attack is trivial to execute once an attacker has any valid authentication token, as the vulnerable endpoints accept the email parameter directly from the URL path without any validation against the authenticated user's identity or role permissions.

Root Cause

The root cause of this vulnerability is the absence of authorization middleware or logic in the affected route handlers. While the application uses authenticateToken to verify that a request comes from a logged-in user, it fails to implement subsequent checks that would verify:

1. Ownership Verification - Whether the authenticated user is accessing their own record
2. Role-Based Access Control (RBAC) - Whether the user has administrative or staff privileges
3. Permission Boundaries - Whether the specific action (read, modify, delete) is allowed for the user's role

This is a classic example of "authentication is not authorization" where developers conflate user identity verification with access control enforcement.

Attack Vector

The attack vector is network-based and requires low-privilege authenticated access. An attacker would need to:

1. Obtain a valid authentication token by registering or compromising any user account
2. Identify target student email addresses through enumeration, social engineering, or data leakage
3. Send crafted HTTP requests to the vulnerable endpoints substituting their own email with the target's email
4. Successfully read, modify status, or delete student records without authorization

The vulnerability affects all three HTTP methods (GET, PUT, DELETE) on the student API routes, providing attackers with full CRUD capabilities on any student record. This could enable data theft, unauthorized status modifications affecting student placements, or denial of service through record deletion.

Detection Methods for CVE-2026-25806

Indicators of Compromise

• Unusual patterns of API requests to /api/students/:email endpoints where the email parameter differs from the authenticated user's identity
• Single authenticated sessions making requests for multiple different student records
• Unexpected modifications to student status or deletions without corresponding administrative activity logs
• Access patterns showing users retrieving or modifying records outside their institutional scope

Detection Strategies

• Implement logging that captures both the authenticated user identity and the target resource being accessed
• Create alerts for API requests where the authenticated user's email does not match the requested :email parameter (for non-admin users)
• Monitor for bulk enumeration attempts where a single session queries many different student emails in rapid succession
• Review application logs for DELETE or PUT operations on student records and correlate with authorized administrative actions

Monitoring Recommendations

• Deploy web application firewall (WAF) rules to detect and alert on suspicious patterns of student record access
• Implement rate limiting on the affected endpoints to slow enumeration attacks
• Enable audit logging for all student record access, modifications, and deletions with full request context
• Configure SIEM alerts for anomalous access patterns indicating potential abuse of this vulnerability

How to Mitigate CVE-2026-25806

Immediate Actions Required

• Upgrade PlaciPy to a patched version when available from Praskla Technology
• Review the GitHub Security Advisory for vendor-specific guidance
• Implement network-level access controls to restrict API access to trusted sources if possible
• Audit application logs for signs of exploitation or unauthorized access to student records
• Consider temporarily disabling or restricting access to the affected endpoints until a patch is applied

Patch Information

Organizations using PlaciPy version 1.0.0 should monitor the official GitHub Security Advisory for patch availability and upgrade instructions. The fix should implement proper authorization middleware that validates user ownership or role permissions before allowing access to student records.

Workarounds

• Implement a reverse proxy or API gateway rule that validates the requesting user's identity matches the email parameter in the URL path
• Add custom middleware at the infrastructure level to perform authorization checks before requests reach the application
• Restrict network access to the PlaciPy API to only trusted internal networks or authenticated administrative systems
• Consider implementing IP allowlisting for administrative operations until the vulnerability is patched

# Example nginx configuration to restrict access to affected endpoints
# Note: This is a temporary workaround and does not replace proper application-level authorization
location ~ ^/api/students/ {
    # Restrict to internal network only
    allow 10.0.0.0/8;
    allow 192.168.0.0/16;
    deny all;
    
    proxy_pass http://placipy-backend;
}