CVE-2024-40579Public exploitNetwork attack vector

Stored XSS via unsanitized hostname parameter

Published Nov 14, 2024 · Updated Nov 15, 2024

Stored XSS in Virtuozzo Hybrid Server For WHMCS 1.7.1 allows remote authenticated users to read sensitive data via a hostname change. In modules/servers/virtuozzoVPS/pages/clientarea.php, the module accepts the hostname POST value without validation and later renders the stored value in the WHMCS admin portal. Exploitation requires a linked container, client-area access to change its hostname, and an administrator who views the container; the injected script runs in that administrator's browser.

CVSS severity5.4
Medium
EPSS probability0.35%
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 Virtuozzo Hybrid Server For WHMCS 1.7.1 allows remote authenticated users to read sensitive data via a hostname change. In modules/servers/virtuozzoVPS/pages/clientarea.php, the module accepts the hostname POST value without validation and later renders the stored value in the WHMCS admin portal. Exploitation requires a linked container, client-area access to change its hostname, and an administrator who views the container; the injected script runs in that administrator's browser.

The record

CVE
CVE-2024-40579
Published
Nov 14, 2024
Updated
Nov 15, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 14, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 15, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.4CISA-ADPCVSS: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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

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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