CVE-2011-4813

Exp

Directory traversal vulnerability in clientarea.php in WHMCompleteSolution (WHMCS) 3.x.x allows remote attackers to read arbitrary files via an invalid action and a ../ (dot dot slash) in the templatefile parameter.

Published: 2011-12-14 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-4813 is rated High Exploit Risk (64.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.72%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2011-4813

EDB-ID Source Kind Published Link
18081 exploit_db edb 2011-11-04 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2011-4813

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 2026-04-02 3.70% 2.72% -0.98%
2 2026-03-06 1.62% 3.70% +2.08%
3 2026-01-18 — 1.62% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-4813

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N 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:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2011-4813

Affected software / configurations for CVE-2011-4813

Vendor Product Version Raw CPE
whmcs whmcompletesolution 3.0.0 cpe:2.3:a:whmcs:whmcompletesolution:3.0.0:*:*:*:*:*:*:*

References for CVE-2011-4813

cvelogic Threat Intelligence