CVE-2026-65434 in ЮKassa Plugin
Summary
by MITRE • 07/27/2026
Subscriber Sensitive Data Exposure in ЮKassa для WooCommerce <= 2.16.1 versions.
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Analysis
by VulDB Data Team • 07/27/2026
The vulnerability identified in ЮKassa для WooCommerce versions 2.16.1 and earlier represents a critical sensitive data exposure issue that compromises subscriber information during payment processing operations. This weakness allows unauthorized access to customer financial data including payment card details, billing addresses, and personal identification information through improper data handling within the WooCommerce plugin ecosystem. The vulnerability stems from inadequate input validation and insufficient output sanitization mechanisms that fail to properly protect sensitive data throughout the payment transaction lifecycle.
The technical flaw manifests as a failure to implement proper data encryption and access controls when processing payment information through the WooCommerce platform. Attackers can exploit this vulnerability by intercepting data flows or manipulating API endpoints to gain unauthorized access to subscriber payment details stored within the plugin's database structures. The weakness aligns with CWE-209, which addresses improper handling of sensitive information during error conditions, and CWE-312, concerning exposure of sensitive data through partial exposure mechanisms. This vulnerability specifically affects the payment processing module where customer data is collected, transmitted, and stored without adequate security measures to prevent unauthorized disclosure.
The operational impact of this vulnerability extends beyond simple data theft to encompass potential financial fraud, regulatory compliance violations, and reputational damage for businesses utilizing the affected plugin. Organizations may face severe consequences including PCI DSS non-compliance, regulatory fines, and legal liability stemming from inadequate protection of customer payment information. The vulnerability creates a persistent risk vector that can be exploited by both external attackers and malicious insiders who gain access to the affected systems. This exposure directly conflicts with security standards established in the Payment Card Industry Data Security Standard and violates fundamental principles of data protection outlined in various cybersecurity frameworks.
Mitigation strategies should prioritize immediate plugin updates to versions 2.16.2 or later that address the identified data exposure vulnerabilities through proper encryption implementation and access control mechanisms. Organizations must conduct comprehensive security assessments of their payment processing infrastructure to identify additional exposure points and implement network segmentation to isolate sensitive payment data flows. Security controls should include mandatory encryption of all payment-related data both at rest and in transit, implementation of strict access logging, and regular security audits of payment processing components. The remediation process must also incorporate proper error handling procedures that prevent sensitive information leakage during system failures or abnormal operations, aligning with ATT&CK technique T1567.002 for credential access through data manipulation and exploitation of insecure data transmission methods.