CVE-2025-13004: E-Commerce Package Auth Bypass Vulnerability

CVE-2025-13004 Overview

CVE-2025-13004 is an Authorization Bypass Through User-Controlled Key vulnerability (CWE-639) affecting Farktor Software E-Commerce Services Inc. E-Commerce Package. This vulnerability allows attackers to manipulate user-controlled variables to bypass authorization controls, potentially gaining unauthorized access to resources or performing actions beyond their intended privileges.

Critical Impact

Attackers can exploit user-controlled key parameters to bypass authorization mechanisms, potentially modifying data without authorization and causing limited service disruption to e-commerce operations.

Affected Products

• Farktor Software E-Commerce Services Inc. E-Commerce Package (through version 27112025)

Discovery Timeline

• 2026-02-12 - CVE CVE-2025-13004 published to NVD
• 2026-02-12 - Last updated in NVD database

Technical Details for CVE-2025-13004

Vulnerability Analysis

This vulnerability falls under CWE-639 (Authorization Bypass Through User-Controlled Key), commonly known as Insecure Direct Object Reference (IDOR). The E-Commerce Package fails to properly validate user-supplied key values when performing authorization decisions, allowing authenticated users with limited privileges to access or modify resources belonging to other users or higher-privileged accounts.

The attack requires network access with low complexity but does require user interaction. Successful exploitation primarily impacts data integrity, allowing unauthorized modifications to e-commerce data, while also potentially causing limited availability disruptions to the affected system.

Root Cause

The root cause of this vulnerability stems from improper authorization controls that rely on user-controllable parameters (such as object identifiers, user IDs, or resource keys) without performing adequate server-side validation. When the application uses client-supplied values to determine which objects a user can access without verifying the user's authorization to access those specific objects, attackers can manipulate these parameters to access unauthorized resources.

Attack Vector

The vulnerability is exploitable over the network by authenticated attackers who can manipulate request parameters containing user-controlled keys. An attacker would modify identifier values in HTTP requests (such as changing an order ID, customer ID, or product reference) to access or modify data belonging to other users. While user interaction is required for successful exploitation, the attack complexity is low once the attacker identifies the vulnerable parameter.

The exploitation mechanism typically involves intercepting legitimate requests and modifying numeric or predictable identifiers to reference objects belonging to other users, then submitting the tampered request to gain unauthorized access.

Detection Methods for CVE-2025-13004

Indicators of Compromise

• Unusual patterns of sequential or enumerated ID access in application logs from single users
• Access attempts to resources with IDs that should not be accessible to the requesting user
• Failed authorization events followed by successful accesses to the same resource type with different IDs
• Anomalous spikes in API requests containing varied object identifiers from the same session

Detection Strategies

• Implement application-level logging that tracks object access patterns and correlates them with user authorization levels
• Deploy Web Application Firewall (WAF) rules to detect parameter tampering and sequential ID enumeration attempts
• Monitor for unusual access patterns where users access resources at rates inconsistent with normal behavior
• Enable SentinelOne Singularity Platform to detect anomalous application behavior and potential IDOR exploitation attempts

Monitoring Recommendations

• Review access logs for patterns indicating systematic enumeration of object identifiers
• Configure alerts for authorization failures followed by access pattern changes
• Monitor e-commerce transaction logs for modifications by unauthorized users
• Implement behavioral analytics to identify users accessing resources outside their normal scope

How to Mitigate CVE-2025-13004

Immediate Actions Required

• Review and update the Farktor Software E-Commerce Package to a patched version when available
• Implement server-side authorization checks that verify user permissions for each object access request
• Replace direct object references with indirect references (such as per-user mapping tables) where possible
• Conduct a security audit of all endpoints accepting user-controlled identifiers

Patch Information

Consult the USOM Security Advisory for official patch information and remediation guidance from the Turkish National Cyber Incident Response Center. Organizations running E-Commerce Package versions through 27112025 should contact Farktor Software for the latest security updates.

Workarounds

• Implement additional server-side authorization validation at the application layer to verify user access rights before processing requests
• Deploy a Web Application Firewall (WAF) with rules configured to detect and block parameter manipulation attempts
• Implement rate limiting on sensitive API endpoints to slow enumeration attacks
• Use cryptographically unpredictable identifiers instead of sequential numeric IDs for sensitive objects
• Enable detailed access logging and establish monitoring for suspicious access patterns until a permanent fix is applied

Organizations should prioritize applying vendor patches when available. For additional technical details, refer to the USOM Security Advisory.