CVE-2026-78534 in Educavo Plugin
Summary
by MITRE • 10/10/2026
Unauthenticated Cross Site Scripting (XSS) in Educavo <= 3.4.2 versions.
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Analysis
by VulDB Data Team • 10/10/2026
The vulnerability identified as an unauthenticated cross-site scripting flaw within Educavo versions prior to or equal to 3.4.2 represents a critical security deficiency that allows attackers to inject malicious client-side scripts into web pages viewed by other users. This specific class of vulnerability is categorized under CWE-79, which denotes Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting. The absence of authentication requirements for this exploit vector significantly elevates the severity of the issue because it removes a primary barrier to entry, enabling any individual with internet access and knowledge of basic web exploitation techniques to initiate an attack without needing valid credentials or prior authorization within the application environment.
From a technical perspective, the flaw likely stems from insufficient validation or sanitization of user-supplied input that is subsequently rendered in the browser context without proper encoding. When the Educavo platform processes data submitted through forms, URL parameters, or other interactive elements and reflects it back to the client side without adequately escaping special characters such as angle brackets, quotes, or ampersands, the web browser interprets these inputs as executable code rather than static text content. This failure in input handling allows an attacker to craft a malicious payload that executes within the security context of the application's domain, effectively bypassing same-origin policy restrictions and granting the script access to sensitive data stored by the browser for that specific site.
The operational impact of this vulnerability is substantial as it facilitates session hijacking, credential theft, and defacement of the user interface. An attacker can leverage JavaScript commands to steal administrative cookies or authentication tokens, thereby gaining unauthorized control over active sessions belonging to legitimate users including potentially high-privilege administrators. Furthermore, the malicious script can perform actions on behalf of the victim such as modifying account settings, exfiltrating sensitive educational data stored within the platform, or redirecting users to phishing sites designed to capture further credentials. This compromises not only the confidentiality and integrity of user data but also undermines the trustworthiness of the Educavo platform for both students and administrative staff who rely on its secure operation for daily activities.
In terms of threat modeling and attack classification, this vulnerability aligns with MITRE ATT&CK technique T1059 which covers Command and Scripting Interpretation, specifically focusing on client-side script execution via browser-based vectors like JavaScript. The unauthenticated nature of the exploit places it within the initial access or persistence phases depending on how the payload is utilized, potentially allowing for long-term unauthorized access if session tokens are persistently stolen or manipulated. Defense mechanisms such as Content Security Policy headers can mitigate some effects by restricting where scripts can be loaded from and preventing inline script execution, although these serve as compensating controls rather than a fix for the underlying code defect.
To remediate this vulnerability, developers must implement rigorous input validation and output encoding strategies across all entry points within the Educavo application architecture. This involves ensuring that any user-controlled data is strictly validated against expected formats before processing and encoded appropriately based on its context of insertion into HTML, JavaScript, CSS, or URL components to prevent interpretation as code. Utilizing modern web frameworks with built-in automatic escaping features can significantly reduce the risk of such oversights. Additionally, deploying a Web Application Firewall configured to detect and block common XSS payloads provides an additional layer of defense while patches are being developed and deployed by the vendor for all affected versions up through 3.4.2.