CVE-2026-6201: CodeAstro Job Portal Auth Bypass Flaw

CVE-2026-6201 Overview

A vulnerability was identified in CodeAstro Online Job Portal 1.0 affecting the Delete Job Posting Handler component. The impacted element is a function within the file /jobs/job-delete.php. Manipulation of the ID argument leads to improper access controls, allowing unauthorized users to delete job postings they do not own. This is a classic Insecure Direct Object Reference (IDOR) vulnerability that can be exploited remotely without requiring special privileges beyond basic authentication.

Critical Impact

Authenticated attackers can delete arbitrary job postings belonging to other users by manipulating the ID parameter, leading to data integrity issues and potential denial of service for legitimate job posters.

Affected Products

• CodeAstro Online Job Portal 1.0
• /jobs/job-delete.php - Delete Job Posting Handler

Discovery Timeline

• 2026-04-13 - CVE-2026-6201 published to NVD
• 2026-04-13 - Last updated in NVD database

Technical Details for CVE-2026-6201

Vulnerability Analysis

This vulnerability represents a Broken Access Control flaw classified under CWE-266 (Incorrect Privilege Assignment). The application fails to properly verify whether the authenticated user has ownership or authorization to delete a specific job posting before processing the deletion request. When a delete request is submitted to /jobs/job-delete.php, the application processes the ID parameter without validating that the requesting user is the legitimate owner of that job posting.

The network-accessible nature of this vulnerability means that any authenticated user can potentially manipulate the ID parameter to reference job postings created by other users. The application's failure to implement proper authorization checks at the server-side allows this exploitation to succeed. According to the GitHub IDOR Vulnerability Repo, the exploit for this vulnerability is publicly available.

Root Cause

The root cause of this vulnerability is the absence of server-side authorization validation in the job deletion handler. The application likely relies solely on client-side controls or session authentication without implementing object-level access control. When processing deletion requests, the code directly uses the user-supplied ID parameter to identify the target record without verifying that the authenticated user has the privilege to delete that specific resource. This is a fundamental design flaw that violates the principle of least privilege.

Attack Vector

The attack can be executed remotely over the network by any authenticated user. An attacker would:

1. Authenticate to the Online Job Portal with valid credentials
2. Navigate to a job deletion function or intercept a legitimate delete request
3. Modify the ID parameter to reference a job posting owned by another user
4. Submit the manipulated request to /jobs/job-delete.php
5. The application processes the deletion without authorization checks, removing the targeted job posting

The vulnerability does not require elevated privileges beyond standard user authentication, making it accessible to any registered user of the portal.

Detection Methods for CVE-2026-6201

Indicators of Compromise

• Unexpected deletion of job postings without owner initiation
• Web server logs showing multiple delete requests to /jobs/job-delete.php with varying ID parameters from a single session
• Database audit logs indicating deletions performed by users who did not create the original records
• User complaints about missing job postings they did not delete

Detection Strategies

• Implement web application firewall (WAF) rules to detect parameter tampering patterns on the /jobs/job-delete.php endpoint
• Enable detailed access logging for all delete operations including user identity and target resource IDs
• Deploy application-level monitoring to alert on delete operations where the requesting user does not match the resource owner
• Review HTTP request logs for sequential or enumerated ID parameter values indicating automated exploitation attempts

Monitoring Recommendations

• Configure SIEM rules to correlate delete operations with user ownership data to identify unauthorized deletions
• Monitor for unusual patterns of delete requests from individual user sessions
• Enable database-level auditing to track all DELETE operations on job posting tables with user attribution
• Set up alerting for high-frequency delete operations that may indicate automated exploitation

How to Mitigate CVE-2026-6201

Immediate Actions Required

• Implement server-side authorization checks in /jobs/job-delete.php to verify user ownership before processing deletions
• Add session-based validation to ensure the authenticated user ID matches the job posting owner
• Consider temporarily disabling the delete functionality until a proper fix is deployed
• Audit recent delete operations to identify any unauthorized deletions that may have already occurred

Patch Information

At the time of publication, no official patch has been released by CodeAstro. Organizations using this software should implement custom authorization controls or contact the vendor for remediation guidance. Technical details and vulnerability information are available through VulDB Vulnerability #357123.

Workarounds

• Implement a custom middleware or code modification to validate user ownership before any delete operation
• Deploy a web application firewall with rules to restrict access to /jobs/job-delete.php based on request validation
• Temporarily restrict delete functionality to administrative users only until a proper fix is implemented
• Add database-level constraints or triggers to validate user permissions on delete operations

# Example Apache configuration to restrict access (temporary workaround)
# Add to .htaccess or Apache configuration
<Location "/jobs/job-delete.php">
    # Restrict to specific admin IP addresses temporarily
    Require ip 192.168.1.0/24
    # Or disable entirely until patched
    # Require all denied
</Location>