{"cve":"CVE-2006-4272","nvd":{"published":"2006-08-21T21:04:00.000","modified":"2026-06-16T22:28:45.767","status":"Modified","description":"Jelsoft vBulletin 3.5.4 allows remote attackers to register multiple arbitrary users and cause a denial of service (resource consumption) via a large number of requests to register.php.  NOTE: the vendor has disputed this vulnerability, stating \"If you have the CAPTCHA enabled then the registrations wont even go through. ...  if you are talking about the flood being allowed in the first place then surely this is something that should be handled at the server level.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://archives.neohapsis.com/archives/bugtraq/2006-08/0381.html","http://securityreason.com/securityalert/1426","http://www.securityfocus.com/archive/1/443648/100/0/threaded","http://archives.neohapsis.com/archives/bugtraq/2006-08/0381.html","http://securityreason.com/securityalert/1426"],"products":["jelsoft:vbulletin"],"source":"nvd","synced_at":"2026-10-19T19:42:44.451428143+00:00"},"epss":{"cve":"CVE-2006-4272","score":0.01536,"percentile":0.74851,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}