CVE-2026-25858 is a critical vulnerability affecting macrozheng mall versions 1.0.3 and prior, stemming from a weak password recovery mechanism classified under CWE-640. The flaw resides in the mall-portal password reset workflow, where an unauthenticated attacker can reset arbitrary user passwords by submitting only the victim's telephone number. The API response exposes the one-time password (OTP) directly, and the system validates password reset requests solely by comparing the provided OTP against a stored value indexed by telephone number. Crucially, there is no verification of user identity or ownership of the telephone number, allowing attackers to bypass authentication controls. This design flaw enables remote attackers to perform account takeover attacks without requiring any prior authentication or user interaction. The vulnerability has a CVSS 4.0 base score of 9.3, reflecting its critical impact on confidentiality and integrity, with network attack vector, low attack complexity, and no privileges or user interaction needed. Although no public exploits have been reported, the exposure of OTPs in API responses and lack of identity verification make exploitation straightforward. The vulnerability affects all users of macrozheng mall up to version 1.0.3, potentially compromising user accounts and sensitive data. The weakness highlights the importance of secure password reset workflows that verify user identity through multi-factor authentication or out-of-band verification methods.

For European organizations using macrozheng mall, this vulnerability poses a significant risk of unauthorized account access and data compromise. Attackers can remotely reset passwords of any user with a known or guessable telephone number, leading to potential theft of personal data, fraudulent transactions, and disruption of business operations. Retailers and e-commerce platforms relying on macrozheng mall may suffer reputational damage, regulatory penalties under GDPR for inadequate user data protection, and financial losses from fraud. The ease of exploitation and critical severity increase the likelihood of targeted attacks, especially against high-value accounts. Additionally, compromised accounts could serve as footholds for further lateral movement within organizational networks. The vulnerability undermines user trust in the platform’s security and may impact customer retention and compliance with European data protection standards.

Immediate mitigation should focus on disabling or restricting the vulnerable password reset functionality until a secure patch is available. Organizations should implement multi-factor authentication (MFA) for password resets, requiring verification beyond just a telephone number, such as email confirmation, security questions, or biometric checks. The OTP should never be exposed in API responses; instead, it should be sent securely to the user’s verified contact channel. Rate limiting and anomaly detection should be applied to password reset requests to detect and block suspicious activity. Regular audits of authentication workflows and penetration testing can help identify similar weaknesses. Users should be educated to report suspicious password reset notifications. Vendors must prioritize releasing a patch that enforces proper identity verification and secure OTP handling. Organizations should monitor for indicators of compromise related to account takeovers and respond promptly to incidents.