CVE-2025-15513 is a vulnerability identified in the Float Payment Gateway plugin for WordPress, which integrates payment processing within WooCommerce stores. The root cause is improper authorization in the verifyFloatResponse() function, which fails to correctly validate the authenticity of payment verification responses. This flaw allows unauthenticated attackers to manipulate the order status by marking any WooCommerce order as failed without legitimate cause. The vulnerability affects all versions up to and including 1.1.9 of the plugin. The CVSS v3.1 base score is 5.3, reflecting a medium severity level, with an attack vector of network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), and no user interaction (UI:N). The impact is limited to integrity, as attackers cannot disclose sensitive information or cause denial of service but can alter order statuses, potentially disrupting business operations and customer trust. No patches or known exploits are currently available, but the vulnerability is publicly disclosed and assigned CWE-863 (Incorrect Authorization). The flaw stems from improper error handling in the verification function, which does not adequately authenticate the source or validity of payment gateway responses, allowing malicious actors to forge or replay responses to alter order outcomes.

For European organizations, particularly those operating WooCommerce-based e-commerce platforms using the Float Payment Gateway plugin, this vulnerability poses a risk to the integrity of order processing. Attackers can cause legitimate orders to be marked as failed, potentially leading to loss of sales, customer dissatisfaction, and increased support costs. While the vulnerability does not expose customer data or disrupt service availability, the manipulation of order statuses can undermine business operations and damage brand reputation. Financial impacts may arise from lost revenue or fraudulent chargebacks if customers dispute failed orders. The risk is heightened in markets with high e-commerce penetration and reliance on WooCommerce, where attackers could target multiple stores to cause widespread disruption. The lack of required authentication and user interaction makes exploitation straightforward, increasing the likelihood of opportunistic attacks. However, the absence of known exploits in the wild suggests that immediate widespread exploitation is not yet observed.

Organizations should monitor the Float Payment Gateway plugin vendor for official patches addressing this vulnerability and apply updates promptly once available. Until a patch is released, administrators can implement additional verification layers by customizing the plugin or WooCommerce hooks to validate payment gateway responses more rigorously, such as verifying digital signatures or transaction IDs against trusted sources. Restricting access to the WordPress admin and WooCommerce order management interfaces through IP whitelisting or multi-factor authentication can reduce the risk of unauthorized manipulation. Regularly auditing order status changes and implementing alerting for unusual patterns can help detect exploitation attempts early. Additionally, organizations should ensure their WordPress and WooCommerce installations are kept up to date and follow best practices for plugin management, including limiting the number of installed plugins to reduce attack surface. Engaging with security professionals to perform penetration testing focused on payment workflows can identify residual weaknesses.