CVE-2025-49998 in WooCommerce Fortnox Integration Plugin
Summary
by MITRE • 06/20/2025
Missing Authorization vulnerability in Wetail WooCommerce Fortnox Integration allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects WooCommerce Fortnox Integration: from n/a through 4.5.5.
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Analysis
by VulDB Data Team • 06/23/2025
The CVE-2025-49998 vulnerability represents a critical missing authorization flaw within the Wetail WooCommerce Fortnox Integration plugin, exposing systems to unauthorized access and potential data compromise. This security weakness stems from incorrectly configured access control security levels that fail to properly validate user permissions before granting access to sensitive functionalities. The vulnerability specifically impacts versions of the WooCommerce Fortnox Integration plugin ranging from the initial release through version 4.5.5, indicating a widespread exposure across multiple iterations of the software. The affected plugin serves as a bridge between WooCommerce e-commerce platforms and Fortnox accounting software, facilitating automated data synchronization and financial transaction processing. Organizations utilizing this integration for managing their online store finances and accounting operations face significant risk from this authorization bypass vulnerability.
The technical implementation of this vulnerability manifests through insufficient access control validation mechanisms within the plugin's codebase. When users interact with the integrated system, the application fails to properly verify whether the requesting entity possesses adequate privileges to perform specific actions. This misconfiguration allows unauthorized users to exploit the system's access control mechanisms and gain access to functionality that should be restricted to authorized administrators or specific user roles. The flaw operates at the application level where authentication checks are either absent, improperly implemented, or bypassed entirely, creating a pathway for malicious actors to manipulate the integration's behavior and access sensitive financial data. According to CWE classification, this vulnerability aligns with CWE-285: Improper Authorization, which specifically addresses scenarios where systems fail to properly enforce access control policies.
The operational impact of CVE-2025-49998 extends beyond simple unauthorized access, potentially enabling comprehensive data breaches and financial fraud. Attackers exploiting this vulnerability could access customer payment information, transaction records, and accounting data that flows through the WooCommerce-Fortnox integration. The consequences include potential financial loss, regulatory compliance violations, and reputational damage to businesses relying on the affected plugin. Organizations may experience unauthorized modifications to financial records, creation of fraudulent transactions, or complete exposure of sensitive business financial data. This vulnerability particularly threatens e-commerce businesses that handle large volumes of customer transactions and financial information, as the integration's scope encompasses critical business operations and monetary data flows. The attack surface expands significantly when considering that WooCommerce platforms often serve as primary interfaces for customer-facing financial transactions.
Mitigation strategies for CVE-2025-49998 require immediate action to address the authorization bypass vulnerability within the affected plugin. Organizations should implement the latest available security patches from the plugin developers as soon as they become available, typically through the WordPress plugin update system. System administrators must conduct thorough access control reviews to ensure that only authorized personnel possess administrative privileges within the WooCommerce environment and Fortnox integration settings. Network-level security measures including firewalls and access control lists should be implemented to limit direct access to the integration endpoints. Security monitoring and logging should be enhanced to detect unauthorized access attempts or suspicious activities within the integration's operational boundaries. According to ATT&CK framework, this vulnerability maps to T1078: Valid Accounts and T1566: Phishing, as attackers may leverage compromised credentials or exploit the authorization bypass to gain access to legitimate user accounts. Organizations should also consider implementing principle of least privilege configurations, ensuring that users only possess necessary permissions for their specific roles within the integrated system. Regular security audits and vulnerability assessments should be conducted to identify and remediate similar access control weaknesses throughout the organization's technology stack.