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CVE-2011-4813

26
FAUCET Score

CVE-2011-4813 describes a directory traversal vulnerability in WHMCompleteSolution (WHMCS) 3.x.x, specifically within the clientarea.php component. This flaw allows unauthenticated remote attackers to read arbitrary files on the server by manipulating the 'templatefile' parameter with dot-dot-slash sequences. With a CVSS score of 5.0, it is a medium-severity vulnerability, easily exploitable over the network with low complexity, leading to potential information disclosure. While not on the KEV catalog and with no active exploitation indicated, public exploit code exists on ExploitDB, though there is minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
3.0.0CPE matchmatch criteria
cpe:2.3:a:whmcs:whmcompletesolution:3.0.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.29%
Probability of exploitation in next 30 days
EPSS Percentile
87.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-18081 · Nov 4, 2011
This CVE's current EPSS score of 0.0329 is in the 82nd percentile among its peer group of 23,690 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exploit-db.com / exploits/18081