CVE-2025-67078: Agora Project XSS Vulnerability

CVE-2025-67078 Overview

CVE-2025-67078 is a Cross-Site Scripting (XSS) vulnerability affecting Omnispace Agora Project versions prior to 25.10. This vulnerability allows remote attackers to execute arbitrary JavaScript code in the context of a victim's browser session by exploiting improper input sanitization in the notify parameter of the file controller responsible for displaying error messages.

Critical Impact

Successful exploitation enables attackers to steal session cookies, hijack user accounts, perform actions on behalf of authenticated users, or redirect victims to malicious websites through crafted URLs targeting the error display functionality.

Affected Products

• Agora Project versions before 25.10
• Agora Project file controller error display component
• Web deployments utilizing the notify parameter for error handling

Discovery Timeline

• 2026-01-15 - CVE-2025-67078 published to NVD
• 2026-01-21 - Last updated in NVD database

Technical Details for CVE-2025-67078

Vulnerability Analysis

This reflected XSS vulnerability exists in the Agora Project file controller component that handles error message display. The notify parameter accepts user-supplied input that is subsequently rendered in the browser without proper sanitization or encoding. When a user clicks a malicious link containing JavaScript payload in the notify parameter, the code executes within the security context of the vulnerable application.

The vulnerability requires user interaction—specifically, the victim must click a crafted link or visit a page controlled by the attacker. Once triggered, the malicious script executes with the same privileges as the authenticated user, potentially compromising confidential data or enabling further attacks against the application.

Root Cause

The root cause is a classic CWE-79 (Improper Neutralization of Input During Web Page Generation) issue where user-controlled input from the notify parameter is reflected directly into HTML output without adequate encoding. The file controller fails to implement proper output escaping when rendering error messages, allowing HTML and JavaScript content to be interpreted by the browser rather than displayed as text.

Attack Vector

The attack is network-based and requires social engineering to trick users into clicking malicious links. An attacker crafts a URL containing JavaScript payload within the notify parameter value. When shared via phishing emails, malicious websites, or compromised forums, unsuspecting users who click the link will execute the attacker's script in their browser session.

The attack flow typically follows this pattern: the attacker constructs a URL pointing to the vulnerable file controller endpoint with a crafted notify parameter containing encoded JavaScript. When the victim accesses this URL while authenticated to Agora Project, the malicious script executes, potentially exfiltrating session tokens or performing unauthorized actions.

Detection Methods for CVE-2025-67078

Indicators of Compromise

• Unusual URL patterns in web server logs containing encoded script tags or JavaScript event handlers in the notify parameter
• HTTP requests to file controller endpoints with abnormally long or encoded notify parameter values
• User reports of unexpected browser behavior or redirects when accessing Agora Project error pages
• Evidence of session token exfiltration attempts in network traffic logs

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block common XSS payloads in URL parameters
• Configure intrusion detection systems to alert on requests containing <script>, javascript:, or HTML event handlers in query strings
• Deploy content security policy (CSP) headers to restrict inline script execution and report violations
• Enable detailed access logging for the file controller endpoint to capture suspicious parameter values

Monitoring Recommendations

• Review web server access logs for requests to file controller endpoints with encoded or suspicious notify parameter values
• Monitor CSP violation reports for blocked inline script attempts originating from error pages
• Implement real-time alerting for repeated XSS pattern matches targeting the vulnerable endpoint
• Track user-reported security incidents related to unexpected behavior on error pages

How to Mitigate CVE-2025-67078

Immediate Actions Required

• Upgrade Agora Project to version 25.10 or later immediately
• Implement Content Security Policy (CSP) headers with script-src 'self' to mitigate XSS impact as a defense-in-depth measure
• Deploy WAF rules to filter XSS payloads targeting the notify parameter
• Educate users about the risks of clicking suspicious links, particularly those containing encoded characters

Patch Information

Organizations should upgrade to Agora Project version 25.10 or later, which addresses this vulnerability. The official project information is available at the Agora Project website. Additional security advisory details can be found in the Helx Blog Security Advisory.

Workarounds

• If immediate patching is not possible, implement server-side input validation to strip or encode HTML entities from the notify parameter
• Deploy a reverse proxy or WAF rule to sanitize the notify parameter before it reaches the application
• Restrict access to the vulnerable file controller endpoint to authenticated users only via network controls
• Implement strict CSP headers to prevent inline script execution as a temporary mitigation

# Apache mod_headers CSP configuration example
Header set Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; object-src 'none';"