CVE-2026-23797 identifies a critical security weakness in OpenSolution's Quick.Cart e-commerce platform, specifically version 6.7, where user passwords are stored in plaintext rather than being hashed or encrypted. This vulnerability is categorized under CWE-256, which concerns the plaintext storage of sensitive information. The flaw allows any user with high privileges—such as administrators or system operators—to view user passwords directly on the user editing interface. This exposure violates fundamental security principles, as passwords should never be stored or displayed in plaintext. The vendor was notified early but has not disclosed detailed information about affected version ranges or issued patches, and only version 6.7 has been confirmed vulnerable through testing. The CVSS 4.0 base score is 6.9 (medium severity), reflecting that the attack vector is network-based with low complexity and no user interaction, but requires high privileges. The vulnerability impacts confidentiality severely, as compromised passwords can lead to unauthorized access, credential reuse attacks, and lateral movement within networks. There is no indication of known exploits in the wild, but the lack of remediation increases risk over time. Organizations relying on Quick.Cart 6.7 should consider this a significant risk, especially in environments where privileged accounts are shared or insufficiently controlled.

For European organizations, this vulnerability poses a substantial risk to the confidentiality of user credentials, which can lead to unauthorized access to customer accounts and administrative functions. The plaintext storage of passwords means that any attacker or insider with elevated privileges can harvest all user passwords, potentially enabling credential stuffing attacks across other services if users reuse passwords. This can result in data breaches, financial fraud, and reputational damage. Additionally, attackers gaining access to administrative credentials could manipulate e-commerce transactions, alter pricing, or exfiltrate sensitive business data. The impact is heightened in sectors with strict data protection regulations such as GDPR, where exposure of personal data can lead to significant legal and financial penalties. The absence of patches or vendor guidance increases the window of exposure, making timely mitigation critical for affected organizations.

European organizations using Quick.Cart 6.7 should immediately audit their installations to confirm the presence of this vulnerability. Since no official patch is available, organizations should implement compensating controls such as restricting access to the user editing page strictly to trusted administrators, enforcing strong access controls and multi-factor authentication for privileged accounts, and monitoring for unusual access patterns. Passwords stored in plaintext should be migrated to a secure hashing algorithm (e.g., bcrypt, Argon2) as soon as possible, which may require custom development or vendor engagement. Regularly review and rotate administrative credentials and encourage users to change passwords, especially if there is suspicion of compromise. Network segmentation and logging should be enhanced to detect and prevent lateral movement by attackers who gain high privileges. Organizations should also engage with OpenSolution for updates and consider alternative e-commerce platforms if remediation is delayed.