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CVE-2013-3536

28
FAUCET Score

CVE-2013-3536 describes a SQL injection vulnerability in the Group Pay module (version 1.5 and earlier) for WHMCS, specifically within the gp_LoadUserFromHash function in functions_hash.php. This flaw allows remote attackers to execute arbitrary SQL commands by manipulating the 'hash' parameter. With a CVSS score of 7.5, this vulnerability is considered highly severe due to its low attack complexity and potential for complete compromise of confidentiality, integrity, and availability. While not listed on the KEV catalog, public exploit code exists on ExploitDB, indicating its exploitability, though there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.5CPE matchmatch criteria
cpe:2.3:a:whmcs:group_pay:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.24%
Probability of exploitation in next 30 days
EPSS Percentile
81.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
ExploitDB: EDB-24934 · Apr 8, 2013
This CVE's current EPSS score of 0.0224 is in the 66th percentile among its peer group of 51,553 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/121046/WHMCS-Grouppay-1.5-SQL-Injection.html
Exploit
secunia.com / advisories/52804
Vendor Advisory
exploit-db.com / exploits/24934
osvdb.org / 91980