CVE-2025-49320 is a Missing Authorization vulnerability (CWE-862) identified in the FraudLabs Pro plugin for WooCommerce, a widely used e-commerce fraud detection service integrated into WooCommerce stores. This vulnerability arises due to incorrectly configured access control security levels, allowing unauthorized users to exploit certain functionalities without proper authorization checks. Specifically, the flaw exists in versions up to 2.22.11 of the FraudLabs Pro for WooCommerce plugin. The vulnerability does not require authentication or user interaction, and it can be exploited remotely over the network (AV:N). The CVSS 3.1 base score is 5.3 (medium severity), reflecting that while confidentiality and availability are not impacted, the integrity of the system can be compromised. The integrity impact suggests that an attacker could manipulate or alter fraud detection data or settings, potentially bypassing fraud checks or injecting false data. Since FraudLabs Pro is a fraud prevention tool, such manipulation could allow fraudulent transactions to proceed undetected or disrupt legitimate fraud detection processes. No known exploits are currently reported in the wild, and no patches or fixes have been published at the time of this report. The vulnerability's root cause is a failure to enforce proper authorization controls on sensitive operations within the plugin, which is critical given the plugin’s role in transaction validation and fraud prevention. This vulnerability could be leveraged by attackers to undermine e-commerce security, leading to financial losses and reputational damage for affected merchants.

For European organizations operating WooCommerce-based e-commerce platforms using the FraudLabs Pro plugin, this vulnerability poses a significant risk to transaction integrity. Attackers exploiting this flaw could bypass fraud detection mechanisms, allowing fraudulent transactions to be processed, resulting in direct financial losses and increased chargebacks. Additionally, manipulation of fraud data could erode trust in the merchant’s security posture and damage customer confidence. Given the GDPR environment, any fraudulent activity leading to data misuse or financial harm could also attract regulatory scrutiny and penalties. The lack of authentication and user interaction requirements means that attackers can exploit this vulnerability remotely and anonymously, increasing the threat surface. Organizations relying on FraudLabs Pro for fraud prevention must consider the potential for attackers to disrupt their fraud mitigation strategies, which could have cascading effects on payment processing and customer trust. This is particularly critical for mid-to-large scale European e-commerce businesses where transaction volumes and fraud risks are higher.

1. Immediate mitigation should include disabling the FraudLabs Pro plugin for WooCommerce until a vendor patch is released. 2. Monitor all transactions closely for unusual patterns or spikes in fraudulent activity that could indicate exploitation. 3. Implement additional fraud detection layers independent of the vulnerable plugin, such as server-side transaction validation or third-party fraud prevention services. 4. Restrict access to WooCommerce administrative interfaces and plugin management to trusted personnel only, using strong authentication and network segmentation to reduce exposure. 5. Regularly review and audit access control configurations within WooCommerce and associated plugins to ensure proper authorization enforcement. 6. Stay updated with vendor communications and apply patches promptly once available. 7. Consider deploying Web Application Firewalls (WAFs) with custom rules to detect and block suspicious requests targeting FraudLabs Pro endpoints. 8. Conduct security awareness training for e-commerce administrators to recognize and respond to potential fraud incidents.