CVE-2025-12776: Stored Cross-Site Scripting

Published Jan 7, 2026
·
Updated

The Report Builder component of the application stores user input directly in a web page and displays it to other users, which raised concerns about a possible Cross-Site Scripting (XSS) attack. Proper management of this functionality helps ensure a secure and seamless user experience.  Although the user input is not validated in the report creation, these scripts are not executed when the report is run by end users. The script is executed when the report is modified through the report builder by a user with edit permissions.

The Report Builder is part of the WebConsole.  The WebConsole package is currently end of life, and is no longer maintained. We strongly recommend against installing or using it in any production environment. However, if you choose to install it, for example, to access functionality like the Report Builder, it must be deployed within a fully isolated network that has no access to sensitive data or internet connectivity. This is a critical security precaution, as the retired package may contain unpatched vulnerabilities and is no longer supported with updates or fixes.

Affected Software

4 affected components
All of the following
Commvault Commvault>=11.36.0<=11.36.68
Microsoft Windows
All of the following
Commvault Commvault>=11.32.0<=11.32.112
Linux Linux kernel

Event History

Jan 7, 2026
CVE Published
via MITRE·10:03 PM
Data Sourced
via MITRE·10:03 PM
DescriptionWeakness
Data Sourced
via NVD·10:15 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2025-12776?

CVE-2025-12776 has a high severity level due to its potential for Stored Cross-Site Scripting attacks.

2

How do I fix CVE-2025-12776?

To fix CVE-2025-12776, ensure user input is properly sanitized and encoded before being stored and displayed.

3

Which versions of Commvault are affected by CVE-2025-12776?

CVE-2025-12776 affects Commvault versions from 11.32.0 to 11.36.68.

4

What type of attack does CVE-2025-12776 represent?

CVE-2025-12776 represents a Stored Cross-Site Scripting (XSS) vulnerability.

5

Can CVE-2025-12776 impact user sessions?

Yes, CVE-2025-12776 can impact user sessions by allowing an attacker to execute scripts in the context of a victim's session.

Contact

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