CVE-2025-12776Network attack vector

Script execution via unvalidated stored report input

Published Jan 7, 2026 · Updated Jan 7, 2026

Stored XSS in Commvault Web Console 11.32 and 11.36 allows remote authenticated users to execute scripts through crafted report input. Report Builder stores report-creation input in a web page without validation and interprets it as script when an editor later modifies the report. Execution requires report-edit permission and editor interaction; merely running the report as an end user does not execute the payload.

CVSS severity1.8
Low
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Commvault Web Console 11.32 and 11.36 allows remote authenticated users to execute scripts through crafted report input. Report Builder stores report-creation input in a web page without validation and interprets it as script when an editor later modifies the report. Execution requires report-edit permission and editor interaction; merely running the report as an end user does not execute the payload.

The record

CVE
CVE-2025-12776
Published
Jan 7, 2026
Updated
Jan 7, 2026
Vendor
Commvault
Product
Web Console
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11.32.0 <=11.32.*
  2. Affected versionversion=11.36.0 <=11.36.*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Commvault · Web Consoleversion=11.32.0 <=11.32.*; version=11.36.0 <=11.36.*

Published CVSS scores

1.8CommvaultCVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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