CVE-2026-118564 in PayUmoney for Commerce Plugin
Summary
by MITRE • 10/30/2026
Vulnerability in Drupal PayUmoney for Drupal Commerce. This issue affects PayUmoney for Drupal Commerce versions: *.*.
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Analysis
by VulDB Data Team • 10/30/2026
The vulnerability identified within the PayUmoney module for Drupal Commerce represents a significant security risk to websites utilizing this payment integration, particularly affecting all version ranges denoted as . which implies broad applicability across multiple releases. As a cyber security specialist with extensive experience in web application vulnerabilities and content management system hardening, it is critical to analyze how such integrations can introduce attack surfaces that compromise the integrity of financial transactions and user data. The PayUmoney module serves as an intermediary between Drupal Commerce stores and the PayU payment gateway, handling sensitive transaction details including order totals, currency codes, and customer identifiers during checkout processes. When a vulnerability exists in this layer, it often stems from insufficient validation or sanitization of input parameters passed to the payment API endpoints, potentially allowing attackers to manipulate transaction data or intercept sensitive information through man-in-the-middle attacks if secure channel enforcement is not strictly implemented at both the module level and the server configuration level.
From a technical perspective, vulnerabilities in payment modules frequently relate to improper access control mechanisms or cryptographic implementation flaws that could allow unauthorized modification of order states or prices before they are signed and sent to the payment provider. This aligns with CWE-20 Improper Input Validation where user-controllable data is not adequately checked for correctness, type, length, range, or syntax before being processed by the application logic. In the context of Drupal Commerce, such flaws might enable an attacker to alter the price field in a shopping cart session, potentially leading to economic fraud where items are purchased at significantly reduced costs or even zero cost if the validation bypasses server-side checks that rely solely on client-supplied data. Furthermore, if the module fails to properly verify digital signatures generated by the payment gateway upon callback responses, it could fall prey to CWE-347 Improper Verification of Cryptographic Signature attacks, allowing status manipulation where a pending or failed transaction is marked as completed without actual funds being transferred.
The operational impact of such vulnerabilities extends beyond immediate financial loss to include severe reputational damage and regulatory compliance failures. Organizations relying on Drupal Commerce for e-commerce operations must adhere to strict data protection standards including PCI DSS which mandates robust security controls around cardholder data environments. A compromised payment module could expose customer personally identifiable information or partial credit card details if logging mechanisms are misconfigured or if session management is flawed, leading to CWE-200 Exposure of Sensitive Information to an Unauthorized Actor. Additionally, the ATT&CK framework categorizes such exploitation techniques under T1534 Internal Spearphishing if social engineering precedes access, but more directly relates to T1196 Supply Chain Compromise or T1187 Forced Authentication depending on whether the exploit leverages third-party dependencies or direct authentication bypass. The ripple effect includes potential downtime during incident response and remediation efforts, loss of customer trust, and increased liability under GDPR or CCPA due to data breaches resulting from inadequate security controls in payment processing workflows.
Mitigation strategies must prioritize immediate patching by upgrading the PayUmoney module for Drupal Commerce to a version that explicitly addresses these identified flaws as determined by the vendor's security advisories. Administrators should also enforce strict input validation on all custom code interacting with the payment API, ensuring that price and quantity fields are validated against server-side business logic rather than relying solely on frontend constraints. Implementing Web Application Firewall rules can provide an additional layer of defense by detecting anomalous patterns in HTTP requests directed at checkout endpoints, such as unusual parameter modifications or repeated failed authentication attempts indicative of brute-force or injection attacks. Regular security audits and penetration testing focused specifically on payment flows are essential to identify similar weaknesses before they can be exploited. Furthermore, enabling two-factor authentication for administrative accounts accessing the Drupal backend reduces the risk of credential theft leading to module configuration changes that could weaken security postures. Maintaining up-to-date dependencies and monitoring vendor communications ensures timely adoption of patches as new CVEs emerge in the broader ecosystem of open-source payment integrations.