CVE-2011-5061

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.

Published: 2012-01-14 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-5061 is rated Moderate Risk (57.4/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.88%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-5061

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 2.98% 1.88% -1.10%
2 2025-03-29 1.88% 2.98% +1.10%
3 2025-03-17 — 1.88% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-5061

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2011-5061

Affected software / configurations for CVE-2011-5061

Vendor Product Version Raw CPE
whmcs whmcompletesolution 4.0.0 cpe:2.3:a:whmcs:whmcompletesolution:4.0.0:*:*:*:*:*:*:*
whmcs whmcompletesolution 4.0.1 cpe:2.3:a:whmcs:whmcompletesolution:4.0.1:*:*:*:*:*:*:*
whmcs whmcompletesolution 4.0.2 cpe:2.3:a:whmcs:whmcompletesolution:4.0.2:*:*:*:*:*:*:*
whmcs whmcompletesolution 4.1.0 cpe:2.3:a:whmcs:whmcompletesolution:4.1.0:*:*:*:*:*:*:*
whmcs whmcompletesolution 4.1.1 cpe:2.3:a:whmcs:whmcompletesolution:4.1.1:*:*:*:*:*:*:*
whmcs whmcompletesolution 4.1.2 cpe:2.3:a:whmcs:whmcompletesolution:4.1.2:*:*:*:*:*:*:*
whmcs whmcompletesolution 4.2.0 cpe:2.3:a:whmcs:whmcompletesolution:4.2.0:*:*:*:*:*:*:*
whmcs whmcompletesolution 4.2.0 cpe:2.3:a:whmcs:whmcompletesolution:4.2.0:beta_r1:*:*:*:*:*:*
whmcs whmcompletesolution 4.2.0 cpe:2.3:a:whmcs:whmcompletesolution:4.2.0:beta_r2:*:*:*:*:*:*
whmcs whmcompletesolution 4.2.0 cpe:2.3:a:whmcs:whmcompletesolution:4.2.0:beta_r3:*:*:*:*:*:*
whmcs whmcompletesolution 4.2.1 cpe:2.3:a:whmcs:whmcompletesolution:4.2.1:*:*:*:*:*:*:*
whmcs whmcompletesolution 4.3.0 cpe:2.3:a:whmcs:whmcompletesolution:4.3.0:*:*:*:*:*:*:*
whmcs whmcompletesolution 4.3.1 cpe:2.3:a:whmcs:whmcompletesolution:4.3.1:*:*:*:*:*:*:*
whmcs whmcompletesolution 4.4.0 cpe:2.3:a:whmcs:whmcompletesolution:4.4.0:*:*:*:*:*:*:*
whmcs whmcompletesolution 4.4.1 cpe:2.3:a:whmcs:whmcompletesolution:4.4.1:*:*:*:*:*:*:*
whmcs whmcompletesolution 4.4.2 cpe:2.3:a:whmcs:whmcompletesolution:4.4.2:*:*:*:*:*:*:*
whmcs whmcompletesolution 4.5.0 cpe:2.3:a:whmcs:whmcompletesolution:4.5.0:*:*:*:*:*:*:*
whmcs whmcompletesolution 4.5.1 cpe:2.3:a:whmcs:whmcompletesolution:4.5.1:*:*:*:*:*:*:*
whmcs whmcompletesolution 4.5.2 cpe:2.3:a:whmcs:whmcompletesolution:4.5.2:*:*:*:*:*:*:*
whmcs whmcompletesolution 5.0.0 cpe:2.3:a:whmcs:whmcompletesolution:5.0.0:*:*:*:*:*:*:*
whmcs whmcompletesolution 5.0.1 cpe:2.3:a:whmcs:whmcompletesolution:5.0.1:*:*:*:*:*:*:*
whmcs whmcompletesolution 5.0.2 cpe:2.3:a:whmcs:whmcompletesolution:5.0.2:*:*:*:*:*:*:*
whmcs whmcompletesolution 5.0.3 cpe:2.3:a:whmcs:whmcompletesolution:5.0.3:*:*:*:*:*:*:*

References for CVE-2011-5061

cvelogic Threat Intelligence