CVE-2026-110799 in Vvveb
Summary
by MITRE • 10/30/2026
Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to version 1.0.8.7, the password reset functionality is vulnerable to an Authentication Bypass due to insufficient validation of the user and token GET parameters. This issue has been patched in version 1.0.8.7.
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Analysis
by VulDB Data Team • 10/30/2026
Vvveb CMS represents a widely utilized content management system designed for creating websites, blogs, and e-commerce stores through an intuitive page builder interface. The security integrity of such platforms relies heavily on the robustness of their authentication mechanisms, particularly during sensitive operations like password resets where user identity must be strictly verified to prevent unauthorized access. Prior to version 1.0.8.7, a critical flaw existed within this system that undermined these fundamental security controls, allowing attackers to bypass standard authentication procedures and potentially take control of user accounts without possessing valid credentials or initiating the legitimate recovery process through email verification channels typically associated with such workflows.
The core technical vulnerability stems from insufficient validation logic applied to the GET parameters used in the password reset functionality. Specifically, the application failed to adequately verify that the user identifier provided in one parameter corresponded correctly and exclusively to the authentication token supplied in another parameter during the reset request processing. This lack of cross-parameter integrity checking means that an attacker could manipulate these inputs independently rather than as a coupled pair required by secure design principles. By exploiting this logic error, it is possible to submit a password reset request using a valid token associated with one account while specifying a different user identifier for another target account. The system erroneously accepts this mismatched combination, treating the provided credentials as sufficient proof of identity and allowing the attacker to set a new password for an arbitrary victim account.
This flaw constitutes a classic Authentication Bypass vulnerability, categorized under CWE-287 which denotes Improper Authentication. In terms of operational impact, the consequences are severe and direct. An adversary who discovers or enumerates valid authentication tokens can leverage this weakness to gain unauthorized administrative access to any user account within the Vvveb CMS environment. This capability effectively neutralizes multi-factor protections if they rely solely on token possession without strict binding to specific user identities. Once inside, an attacker could exfiltrate sensitive data stored in the content management system, modify website configurations, inject malicious code into published pages, or use the compromised account as a foothold for further lateral movement within the associated network infrastructure. The ability to reset passwords arbitrarily also facilitates persistent access even if users change their credentials frequently, as the attacker can continuously reclaim control of accounts they have previously targeted.
From an offensive security perspective, this vulnerability aligns with techniques observed in the MITRE ATT&CK framework, specifically relating to Credential Access and Account Manipulation tactics such as T1078 Valid Accounts or T1536 Prepare for Impact depending on the attacker's ultimate goal of maintaining persistence or disrupting service. The exploitation does not require complex binary analysis or memory corruption exploits but rather relies on logical flaws in web application state management, making it easily exploitable by automated tools and script kiddies alike once discovered. This highlights a common pitfall in rapid development cycles where functional requirements for ease of use may inadvertently compromise rigorous security validation steps.
To mitigate this vulnerability, organizations running Vvveb CMS must immediately upgrade to version 1.0.8.7 or later, which contains the necessary patches to enforce strict binding between user identifiers and authentication tokens during password reset operations. For environments where immediate patching is not feasible due to operational constraints, temporary mitigations should include implementing additional server-side validation logic that ensures the token belongs exclusively to the specified user before processing any state changes. Furthermore, security teams should review logging mechanisms to detect anomalous patterns of password reset requests involving mismatched parameters and consider enforcing rate limiting on authentication endpoints to slow down automated enumeration attempts. Regular penetration testing focused on business logic flaws is also recommended to identify similar vulnerabilities in other parts of the application that may not be covered by standard vulnerability scanners.