CVE-2026-7174 in Entradium
Summary
by MITRE • 10/01/2026
CVE-2026-7174: Stored Cross-Site Scripting vulnerability in Entradium, by Crocantickets. Specifically, in the Name and Field parameters of the endpoint /tools/discount_wizard/discount_config during the process of creating discounts assigned to an event. This vulnerability allows JavaScript code to be injected into the affected parameters, which executes when an event’s discount list page is displayed. Successful exploitation of this vulnerability could allow a remote attacker to send a specially crafted URL to the victim and steal their session data.
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Analysis
by VulDB Data Team • 10/01/2026
The identified security flaw represents a classic instance of Stored Cross-Site Scripting within the Entradium ticketing platform developed by Crocantickets. This vulnerability is specifically located in the Name and Field parameters associated with the /tools/discount_wizard/discount_config endpoint, which serves as the backend interface for configuring discount structures assigned to specific events. The core technical deficiency lies in the insufficient sanitization or validation of user-supplied input during the creation process. When an administrator or authorized user inputs data into these fields, the system fails to properly encode special characters such as angle brackets and quotation marks before storing them in the database. Consequently, when malicious JavaScript payloads are embedded within these parameters, they persist on the server side rather than being executed immediately upon submission. This persistence is what distinguishes stored vulnerabilities from reflected ones, as the poisoned data remains available for subsequent retrieval by any user accessing the relevant interface.
The operational impact of this vulnerability becomes apparent when an event’s discount list page is rendered in a web browser. Because the malicious script was previously saved to the database during the configuration phase, it executes automatically within the context of the victim's session every time that specific page loads. This behavior allows a remote attacker who has gained access to the creation interface or exploited another vector to inject persistent code without requiring immediate interaction from other users beyond viewing the affected page. The primary consequence is the compromise of user sessions and sensitive data. By executing arbitrary JavaScript, an attacker can exfiltrate session cookies, authentication tokens, and potentially personally identifiable information stored in local storage or accessed via DOM manipulation. This effectively allows the attacker to impersonate legitimate administrators or event organizers, leading to unauthorized control over ticketing configurations, financial fraud through manipulated discount structures, and a significant breach of trust with end-users whose data may be compromised during these sessions.
From an industry standard perspective, this vulnerability aligns directly with CWE-79, which defines Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting. The specific mechanism here involves the storage phase where input validation is neglected before database insertion, making it a textbook example of persistent XSS. In terms of offensive security frameworks such as MITRE ATT&CK, this vulnerability facilitates techniques categorized under Collection and Credential Access. Specifically, it enables Browser Session Hijacking (T1539) by stealing cookies or tokens that maintain the user's authenticated state. Furthermore, if the injected script performs keylogging or form grabbing, it may also relate to Input Capture via Keylogging (T1056) or Screen Capture (T1113), depending on the sophistication of the payload delivered through this vector. The persistence of the code means that even after the initial attacker leaves the system, the threat remains active until the malicious data is manually removed from the database and the affected pages are refreshed to clear any cached versions of the compromised content.
Mitigation strategies must address both immediate remediation and long-term architectural improvements. Immediately, all instances of stored XSS payloads within the Name and Field parameters for existing discounts should be identified and purged from the database using secure SQL queries that strip or escape malicious characters. However, a permanent fix requires implementing robust input validation on the server side before any data is persisted. This includes enforcing strict allow-listing for expected character sets in discount names and field identifiers to reject any non-alphanumeric or special characters unless explicitly required by business logic. Additionally, output encoding must be applied consistently whenever these values are rendered into HTML contexts, ensuring that browser interpreters treat the content as text rather than executable code. Implementing a Content Security Policy (CSP) header can also serve as an effective defense-in-depth measure by restricting the sources from which scripts can be loaded or executed, thereby neutralizing many injected payloads even if they bypass input filters. Regular security audits and integration of static application security testing in the development pipeline are recommended to detect such encoding failures early in the software lifecycle.