Description

Unauthenticated Cross Site Scripting (XSS) in EduMall <= 4.5.3 versions.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.1",
  "pubDate": "2026-10-06T09:17:46.180Z",
  "pubdate": "2026-10-06T09:17:46.180Z",
  "executiveSummary": "EduMall versions 4.5.3 and below are affected by an Unauthenticated Cross-Site Scripting (XSS) vulnerability. This security flaw allows unauthenticated remote attackers to inject malicious client-side scripts into web pages viewed by other users.\nThe vulnerability exists due to insufficient input validation and output encoding of user-supplied data. An attacker can exploit this by crafting a malicious payload and enticing a victim to interact with the crafted content, leading to the execution of arbitrary JavaScript in the context of the user's browser session.\nThe primary impact involves the potential compromise of user sessions, unauthorized access to sensitive information, and the ability to perform actions on behalf of the victim within the EduMall application. Since the vulnerability does not require authentication, the attack surface includes any public-facing component of the application that improperly processes input. Successful exploitation poses a high risk to the confidentiality and integrity of user data, potentially leading to account takeover or further malicious activity within the application ecosystem.",
  "technicalDetails": "The vulnerability is a reflected or stored Cross-Site Scripting (XSS) flaw stemming from the application's failure to adequately sanitize or encode untrusted input before rendering it in the browser. In EduMall versions 4.5.3 and below, specific input parameters or fields lack server-side validation or appropriate contextual output encoding, allowing for the injection of arbitrary HTML and script tags.\nThe root cause lies in the application's processing logic, where user-supplied content is echoed back to the client-side environment without being treated as plain text. This allows for the break-out of HTML attributes or the direct injection of <script> blocks.\nThe attack flow begins when an attacker identifies a vulnerable input vector, such as a search field, a comment section, or a URL parameter that is reflected on the page. The attacker crafts a payload—typically a JavaScript string designed to execute malicious functions—and delivers it to the target. In the case of reflected XSS, this is achieved by sending a specially crafted link to an authenticated user. For stored XSS, the payload is persisted within the application database and executed whenever a user navigates to the affected page.\nOnce the payload reaches the victim's browser, it executes within the security context of the EduMall domain. This grants the script access to sensitive browser-stored objects, including document.cookie (if the HttpOnly flag is not strictly enforced), local storage, and the DOM. The malicious script can then perform unauthorized actions, such as exfiltrating session tokens to an attacker-controlled remote server, modifying the content of the page to deceive the user, or performing CSRF-like actions by triggering background requests to the application server with the victim's authenticated privileges.\nBecause the vulnerability is unauthenticated, no prior access or interaction with the system is required to initiate the exploit. The impact is significant because the malicious script runs with the permissions of the victim, effectively bypassing traditional authentication boundaries by hijacking an existing valid session."
}