CVE-2025-40976: WorkDo TicketGo Stored XSS Vulnerability

CVE-2025-40976 Overview

A Stored Cross-Site Scripting (XSS) vulnerability has been identified in WorkDo's TicketGo application. The vulnerability stems from a lack of proper validation of user input when sending a POST request to the /ticketgo-saas/home endpoint through the description parameter. This allows authenticated attackers to inject malicious scripts that are stored on the server and executed in the browsers of other users who view the affected content.

Critical Impact

Attackers can inject persistent malicious scripts that execute in victim browsers, potentially leading to session hijacking, credential theft, and unauthorized actions on behalf of legitimate users.

Affected Products

• WorkDo TicketGo (TicketGo SaaS)

Discovery Timeline

• 2026-01-12 - CVE CVE-2025-40976 published to NVD
• 2026-01-13 - Last updated in NVD database

Technical Details for CVE-2025-40976

Vulnerability Analysis

This Stored XSS vulnerability (CWE-79) occurs due to insufficient input sanitization in WorkDo's TicketGo SaaS application. When users submit data through the description parameter to the /ticketgo-saas/home endpoint, the application fails to properly validate and sanitize the input before storing it in the database and rendering it back to other users.

Unlike reflected XSS attacks that require victims to click malicious links, stored XSS vulnerabilities persist on the target server. The malicious payload is saved in the application's database and subsequently delivered to any user who views the compromised content, making this attack vector particularly dangerous in multi-user environments like ticketing systems.

The vulnerability requires low-privileged authenticated access to exploit, meaning an attacker would need valid credentials to the TicketGo application. Once exploited, the malicious script executes within the security context of the victim's session whenever they view the affected ticket or content.

Root Cause

The root cause of this vulnerability is the failure to implement proper input validation and output encoding for the description parameter in the ticket submission functionality. The application does not sanitize HTML special characters or strip potentially dangerous script tags before storing user-supplied data, nor does it properly encode output when rendering the stored content back to users.

Attack Vector

The attack is network-based and requires an authenticated user with low privileges to exploit. The attacker must craft a malicious POST request to /ticketgo-saas/home containing JavaScript payload in the description parameter. When other users view the affected content, the malicious script executes in their browser context.

The attack requires user interaction, as victims must navigate to and view the page containing the stored malicious payload. Once triggered, the injected script can perform actions including cookie theft, session hijacking, keylogging, phishing attacks via DOM manipulation, or redirecting users to malicious external sites.

Detection Methods for CVE-2025-40976

Indicators of Compromise

• Unusual JavaScript patterns or encoded script tags stored in ticket descriptions or database fields
• Unexpected outbound network connections from client browsers when viewing ticket content
• User session tokens appearing in external request logs or suspicious domains
• Reports of unexpected browser behavior when accessing the TicketGo application

Detection Strategies

• Monitor POST requests to /ticketgo-saas/home for common XSS payloads in the description parameter
• Implement Content Security Policy (CSP) violation reporting to detect script injection attempts
• Review stored ticket content for HTML tags, JavaScript event handlers, and encoded payloads
• Deploy web application firewall (WAF) rules to detect and block common XSS attack patterns

Monitoring Recommendations

• Enable detailed logging for all POST requests to the TicketGo application endpoints
• Configure alerts for CSP violations that may indicate XSS exploitation attempts
• Monitor for unusual patterns in user session activity that could indicate session hijacking
• Regularly audit database content for suspicious stored payloads

How to Mitigate CVE-2025-40976

Immediate Actions Required

• Review all stored ticket descriptions for malicious script content and sanitize any identified payloads
• Implement strict input validation on the description parameter to reject or encode HTML special characters
• Apply output encoding when rendering user-supplied content to prevent script execution
• Enforce Content Security Policy (CSP) headers to restrict inline script execution

Patch Information

Security updates addressing this vulnerability are available. Organizations should consult the INCIBE CERT advisory on WorkDo product vulnerabilities for official patch information and update TicketGo to the latest available version that includes the security fix.

Workarounds

• Implement a Web Application Firewall (WAF) with rules to filter XSS payloads in POST requests
• Restrict access to the ticket creation functionality to trusted users only until patching is complete
• Enable strict Content Security Policy headers to prevent inline script execution
• Manually review and sanitize any user-submitted ticket content in the database

# Example CSP header configuration for Apache
# Add to .htaccess or virtual host configuration
Header set Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; object-src 'none'; frame-ancestors 'self';"