CVE-2025-59335 is a high-severity vulnerability identified in CubeCart version 6, an ecommerce software platform. The vulnerability arises from insufficient session expiration controls (CWE-613) prior to version 6.5.11. Specifically, when a user changes their password, existing authenticated sessions are not automatically invalidated. This means that if a user forgets to log out from a device or location where their account was accessed, an attacker who has gained access to that session can continue to operate with full account privileges despite the password change. The attacker’s session remains active until it naturally expires based on the session timeout configuration, which could be hours or even days. This flaw effectively prevents legitimate users from revoking unauthorized access by simply changing their password, undermining a fundamental security control. The vulnerability requires low privileges (authenticated user) and no user interaction, but the attack vector is local (AV:L), meaning the attacker must have access to an active session on a device or browser. The impact on confidentiality and integrity is high, as the attacker can maintain persistent unauthorized access to sensitive ecommerce account data and potentially manipulate orders or personal information. Availability is not affected. The issue was patched in CubeCart version 6.5.11 by implementing automatic session invalidation upon password changes, ensuring that all active sessions are terminated and re-authentication is required. There are no known exploits in the wild at the time of publication, but the vulnerability poses a significant risk to ecommerce operations relying on vulnerable CubeCart versions.

For European organizations using CubeCart ecommerce software versions prior to 6.5.11, this vulnerability presents a critical risk to customer account security and data confidentiality. Attackers who gain access to a session—through device theft, session hijacking, or insider threats—can maintain persistent unauthorized access even after password resets, potentially leading to fraudulent transactions, theft of personal and payment data, and reputational damage. Given the importance of ecommerce in Europe and strict data protection regulations such as GDPR, failure to address this vulnerability could result in regulatory penalties and loss of customer trust. The inability to immediately revoke access by changing passwords complicates incident response and increases the window of exposure. Organizations with high volumes of customer accounts or sensitive transaction data are particularly at risk. The vulnerability does not directly impact system availability but can indirectly affect business continuity through fraud and compliance violations.

European organizations should promptly upgrade CubeCart installations to version 6.5.11 or later, where the session expiration issue is resolved. Until upgrade is possible, administrators should enforce manual session invalidation by terminating all active sessions when a password change occurs, if supported by their environment or through custom scripting. Implementing multi-factor authentication (MFA) can reduce the risk of session compromise. Organizations should also review session timeout policies to minimize the duration of active sessions and monitor for unusual session activity indicative of unauthorized access. Educating users to always log out from shared or public devices is critical. Additionally, organizations can deploy web application firewalls (WAFs) to detect anomalous session behaviors and consider session management enhancements such as binding sessions to IP addresses or device fingerprints to limit session reuse. Regular security audits and penetration testing focused on session management controls will help identify residual risks.