CVE-2026-19205 in Web Panel
Summary
by MITRE • 09/04/2026
Observable response discrepancy vulnerability in GastroMenum GastroMenum Web Panel allows Account Footprinting.
This issue affects GastroMenum Web Panel: before 31.08.2026.
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Analysis
by VulDB Data Team • 09/04/2026
The GastroMenum Web Panel, a software solution designed for managing restaurant menus and related operations, contains an observable response discrepancy vulnerability that facilitates account footprinting attacks against the application's authentication mechanism. This flaw stems from inconsistent error handling or status code responses when users attempt to interact with user accounts using invalid credentials or non-existent usernames. In secure systems, feedback during login attempts should be uniform regardless of whether a username exists in the database but has an incorrect password, or if the username itself does not exist at all. However, in this vulnerable version of GastroMenum Web Panel prior to August 31, 2026, the application returns distinct responses for these two scenarios. This behavioral difference allows an attacker to determine with high certainty whether a specific email address or username is registered within the system without needing valid authentication credentials.
This type of vulnerability falls under the category of CWE-204: Observable Response Discrepancy and is closely related to CWE-284: Improper Access Control, as it exposes information that should be restricted during the initial stages of an attack lifecycle. The ability to enumerate valid accounts transforms a simple login page into a reconnaissance tool for malicious actors. By scripting automated requests against the authentication endpoint, an attacker can iterate through common email domains or known user identifiers and observe which responses indicate existence versus non-existence. This process effectively bypasses the need for brute-forcing passwords initially, allowing the adversary to build a list of valid targets within the GastroMenum ecosystem.
The operational impact of this vulnerability is significant as it serves as the foundational step for more severe attacks such as credential stuffing and targeted phishing campaigns. Once an attacker has identified which accounts are active, they can focus their efforts on those specific users with higher efficiency. They may employ automated tools to test leaked password databases against these confirmed usernames or craft personalized spear-phishing emails that reference details only a registered user would know. This increases the likelihood of successful unauthorized access and subsequent compromise of sensitive restaurant data, including customer information, order history, and financial records associated with the GastroMenum platform.
From an adversary perspective, this activity aligns with MITRE ATT&CK technique T1087: Account Discovery, specifically within cloud or web application environments where API endpoints are exposed to enumeration attacks. The vulnerability enables the initial phase of reconnaissance, allowing attackers to map out the user base before proceeding to lateral movement or data exfiltration phases if further vulnerabilities exist in the application logic.
To mitigate this risk, developers must ensure that all authentication-related responses return identical HTTP status codes and response bodies for both invalid usernames and incorrect passwords. Implementing a generic error message such as "Invalid username or password" without revealing which part of the credential pair was incorrect is essential to prevent account enumeration. Additionally, implementing rate limiting on login attempts can further hinder automated footprinting tools by introducing delays that make large-scale enumeration impractical within reasonable timeframes. Upgrading to versions released after August 31, 2026, where this issue has been addressed, is the primary remediation strategy for organizations currently relying on affected instances of GastroMenum Web Panel.