CVE-2025-58598 is a vulnerability identified in the Klarna Order Management plugin for WooCommerce, specifically affecting versions up to 1.9.8. The vulnerability is classified under CWE-215, which involves the insertion of sensitive information into debugging code. This means that during the software's operation, sensitive data such as credentials, tokens, or personally identifiable information (PII) may be inadvertently embedded within debugging outputs or logs. Such exposure can allow an attacker with sufficient privileges to retrieve this sensitive information, potentially leading to unauthorized access or data leakage. The CVSS v3.1 base score of 6.6 indicates a medium severity vulnerability with the vector string AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:N. This translates to a network attack vector requiring high attack complexity and privileges, no user interaction, and a scope change. The impact on confidentiality is high, as sensitive data can be retrieved, while integrity is moderately affected due to limited modification potential, and availability is not impacted. The vulnerability requires an attacker to have high privileges, likely meaning administrative or similar elevated access within the WooCommerce environment, to exploit the issue. No public exploits are currently known, and no patches have been linked yet. The vulnerability's presence in a widely used e-commerce plugin that integrates Klarna's payment and order management services poses a risk to merchants using WooCommerce, potentially exposing sensitive customer or transaction data through debugging artifacts.

For European organizations, especially e-commerce businesses using WooCommerce with Klarna Order Management, this vulnerability poses a significant risk to customer data confidentiality. Exposure of sensitive information could lead to data breaches involving payment details, personal customer information, or internal transaction data, undermining customer trust and potentially violating GDPR requirements. The scope change indicated by the CVSS vector suggests that exploitation could affect components beyond the immediate plugin, possibly impacting the broader e-commerce infrastructure. Given the high confidentiality impact, organizations could face regulatory fines, reputational damage, and financial losses. Additionally, attackers with elevated privileges could leverage the exposed data to escalate attacks or conduct fraud. Since WooCommerce is popular among small to medium-sized European retailers, the vulnerability could have widespread implications if not addressed promptly.

To mitigate this vulnerability, European organizations should: 1) Immediately audit their WooCommerce installations to identify if Klarna Order Management plugin versions up to 1.9.8 are in use. 2) Disable debugging features or logging that might expose sensitive information until a patch is available. 3) Restrict administrative access to the WooCommerce backend and server environments to trusted personnel only, minimizing the risk of privilege abuse. 4) Monitor logs and debugging outputs for any inadvertent exposure of sensitive data and remove such data securely. 5) Implement strict access controls and network segmentation to limit exposure of the affected systems. 6) Engage with Klarna and WooCommerce support channels to obtain updates or patches as soon as they are released. 7) Consider deploying Web Application Firewalls (WAFs) with custom rules to detect and block suspicious access patterns targeting debugging endpoints. 8) Conduct regular security assessments and penetration testing focused on plugin vulnerabilities and information leakage. These steps go beyond generic advice by focusing on operational controls around debugging and privilege management specific to this vulnerability.