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Vulnerability record · CVE-2011-5061 · published 14 January 2012

CVE-2011-5061: Whmcs whmcompletesolution code injection vulnerability

Whmcs · Whmcompletesolution

functions.php in WHMCompleteSolution (WHMCS) 4.0.x through 5.0.x allows remote attackers to trigger arbitrary code execution in the Smarty templating system by submitting a crafted ticket, related to improper handling of characters in the subject field.

7.5 CVSS 2.0 High EPSS 2.2% · top 18.2% CWE-94 · Code injection
7.5CVSS 2.0 base score
2.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
16 Jun 2026Last modified by NVD

Description

functions.php in WHMCompleteSolution (WHMCS) 4.0.x through 5.0.x allows remote attackers to trigger arbitrary code execution in the Smarty templating system by submitting a crafted ticket, related to improper handling of characters in the subject field.

AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://forum.whmcs.com/showthread.php?t=43462 PatchVendor Advisory
http://www.webhostingtalk.com/showpost.php?p=7848685&postcount=35
http://forum.whmcs.com/showthread.php?t=43462 PatchVendor Advisory
http://www.webhostingtalk.com/showpost.php?p=7848685&postcount=35

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2011-5061), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.