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CVE-2025-12776

Stored Cross-Site Scripting

MEDIUM
5.4
CVSS Score
Published: January 7, 2026 at 10:03 PM UTC
Updated: June 17, 2026 at 08:32 AM UTC
2 products affected across 1 vendorCommvaultWebConsole

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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  The WebConsole package is currently end of life, and is no longer maintained.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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Commvault· Commvault
95%
11.32.0 ≤ v ≤ 11.32.11211.36.0 ≤ v ≤ 11.36.68
linux-linux-kernel (environment) · microsoft-windows (environment)
WebConsole· Commvault
60%
11.32.0 ≤ v ≤ 11.32.*11.36.0 ≤ v ≤ 11.36.*11.32.011.36.0
Vendor states this is fixed in 11.40.1 (unaffected)
Vendor states this is fixed in 11.42.1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: cverecord
https://documentation.commvault.com/securityadvisories/CV_2025_06_3.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-79

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