https://patchthecve.com/CVEs with upgrade or downgrade fix stepshttps://patchthecve.com/cve/CVE-2012-0693.htmlhttps://patchthecve.com/cve/CVE-2012-0693.htmlTue, 16 Jun 2026 23:38:05 +0000MEDIUM 5.0: submitticket.php in WHMCompleteSolution (WHMCS) 5.03 allows remote attackers to inject arbitrary code into a subject field via crafted ticket data, a different vulnerability than CVE-2011-5061. NOTE: the vendor disputes this issue, noting that some of the details overlap CVE-2011-5061, but that it "https://patchthecve.com/cve/CVE-2011-5061.htmlhttps://patchthecve.com/cve/CVE-2011-5061.htmlTue, 16 Jun 2026 23:35:52 +0000HIGH 7.5: 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.https://patchthecve.com/cve/CVE-2011-4813.htmlhttps://patchthecve.com/cve/CVE-2011-4813.htmlTue, 16 Jun 2026 23:35:27 +0000MEDIUM 5.0: 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.https://patchthecve.com/cve/CVE-2011-4810.htmlhttps://patchthecve.com/cve/CVE-2011-4810.htmlTue, 16 Jun 2026 23:35:26 +0000MEDIUM 5.0: Multiple directory traversal vulnerabilities in WHMCompleteSolution (WHMCS) 3.x and 4.x allow remote attackers to read arbitrary files via the templatefile parameter to (1) submitticket.php and (2) downloads.php, and (3) the report parameter to admin/reports.php.https://patchthecve.com/cve/CVE-2006-0652.htmlhttps://patchthecve.com/cve/CVE-2006-0652.htmlTue, 16 Jun 2026 22:21:01 +0000MEDIUM 6.5: WHMCompleteSolution (WHMCS) before 2.3 assigns incorrect permissions to "resellers", which allows remote authenticated users to perform privileged actions or obtain sensitive information. NOTE: this report is based on a vendor bug report that identified "incorrect permissions." However, the vendorhttps://patchthecve.com/cve/CVE-2005-4235.htmlhttps://patchthecve.com/cve/CVE-2005-4235.htmlTue, 16 Jun 2026 22:18:24 +0000MEDIUM 4.3: Cross-site scripting (XSS) vulnerability in knowledgebase.php in WHMCompleteSolution 2.1 and earlier allows remote attackers to inject arbitrary web script or HTML via the search parameters.