CVE-2025-12454: OpenText Vertica XSS Vulnerability

CVE-2025-12454 Overview

CVE-2025-12454 is a Cross-Site Scripting (XSS) vulnerability affecting the OpenText™ Vertica Management Console. This reflected XSS vulnerability arises from improper neutralization of user-supplied input during web page generation, allowing attackers to inject malicious scripts that execute in the context of a victim's browser session.

Critical Impact

Attackers can exploit this reflected XSS vulnerability to steal session cookies, hijack user sessions, redirect users to malicious sites, or perform unauthorized actions on behalf of authenticated administrators within the Vertica Management Console.

Affected Products

• OpenText™ Vertica versions 10.0 through 10.X
• OpenText™ Vertica versions 11.0 through 11.X
• OpenText™ Vertica versions 12.0 through 12.X
• OpenText™ Vertica versions 23.0 through 23.X
• OpenText™ Vertica versions 24.0 through 24.X
• OpenText™ Vertica versions 25.1.0 through 25.1.X

Discovery Timeline

• 2026-03-13 - CVE-2025-12454 published to NVD
• 2026-03-16 - Last updated in NVD database

Technical Details for CVE-2025-12454

Vulnerability Analysis

This vulnerability is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation), commonly known as Cross-Site Scripting. The flaw exists within the Vertica Management Console web application, where user-controlled input is reflected back to the browser without proper sanitization or encoding.

In a reflected XSS attack scenario, an attacker crafts a malicious URL containing JavaScript payload that, when clicked by a victim user, causes the injected script to execute within the trusted context of the Vertica Management Console. Since this is a management interface, successful exploitation could provide attackers with access to sensitive database administration functions.

The network-based attack vector requires user interaction, meaning victims must be socially engineered into clicking a malicious link. However, once clicked, the attack executes automatically without requiring any special privileges on the attacker's part.

Root Cause

The root cause of this vulnerability is insufficient input validation and output encoding in the Vertica Management Console application. When user-supplied data is incorporated into dynamically generated web pages, the application fails to properly sanitize or escape special characters that have significance in HTML and JavaScript contexts. This allows attackers to break out of the intended data context and inject executable script content.

Attack Vector

The attack vector for CVE-2025-12454 is network-based and requires user interaction. An attacker would typically:

1. Identify a vulnerable parameter or endpoint in the Vertica Management Console that reflects user input
2. Craft a malicious URL containing JavaScript payload embedded in the vulnerable parameter
3. Distribute the malicious link via phishing emails, social media, or other communication channels
4. Wait for an authenticated administrator or user to click the link
5. The victim's browser executes the malicious script within the security context of the Vertica Management Console

The attack does not require the attacker to be authenticated, making it accessible to external threat actors who can successfully deliver the malicious link to potential victims.

Detection Methods for CVE-2025-12454

Indicators of Compromise

• Unusual URL patterns in web server logs containing encoded JavaScript or HTML tags in query parameters
• HTTP requests to the Vertica Management Console containing suspicious strings like <script>, javascript:, or event handlers such as onerror= or onload=
• Reports from users about unexpected browser behavior or redirect warnings when accessing management console links
• Browser security console errors indicating blocked inline script execution due to Content Security Policy violations

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block requests containing XSS payloads targeting the Vertica Management Console
• Enable detailed HTTP access logging on web servers hosting the management console and monitor for suspicious parameter values
• Deploy endpoint detection solutions that can identify malicious script execution patterns in browser processes
• Utilize security information and event management (SIEM) correlation rules to detect patterns of XSS attack attempts

Monitoring Recommendations

• Monitor web server access logs for requests containing HTML special characters or JavaScript keywords in URL parameters
• Set up alerts for anomalous user session behavior that may indicate session hijacking following successful XSS exploitation
• Implement client-side monitoring to detect unexpected DOM modifications or script injections in the management console interface
• Review referrer headers in access logs to identify external sources directing users to potentially malicious console URLs

How to Mitigate CVE-2025-12454

Immediate Actions Required

• Review the vendor security advisory at the Micro Focus Knowledge Article for specific patch information
• Restrict access to the Vertica Management Console to trusted networks and authenticated users only
• Implement Content Security Policy (CSP) headers to mitigate the impact of XSS attacks by restricting script execution sources
• Educate administrators about the risks of clicking links to the management console from untrusted sources

Patch Information

OpenText has released information regarding this vulnerability. Administrators should consult the official Micro Focus Knowledge Article for detailed patch availability and upgrade instructions for affected Vertica versions. Apply the recommended security updates as soon as possible to address this vulnerability.

Workarounds

• Implement network-level access controls to limit management console access to trusted IP addresses and internal networks only
• Deploy a reverse proxy or Web Application Firewall in front of the management console with XSS filtering rules enabled
• Enable strong Content Security Policy headers to prevent inline script execution: Content-Security-Policy: default-src 'self'; script-src 'self'
• Consider disabling or restricting access to the management console until patches can be applied in high-security environments