{"cve":"CVE-2012-2213","nvd":{"published":"2012-04-28T10:06:13.273","modified":"2026-06-16T23:41:11.623","status":"Modified","description":"Squid 3.1.9 allows remote attackers to bypass the access configuration for the CONNECT method by providing an arbitrary allowed hostname in the Host HTTP header.  NOTE: this issue might not be reproducible, because the researcher is unable to provide a squid.conf file for a vulnerable system, and the observed behavior is consistent with a squid.conf file that was (perhaps inadvertently) designed to allow access based on a \"req_header Host\" acl regex that matches www.uol.com.br","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-264"],"references":["http://archives.neohapsis.com/archives/bugtraq/2012-04/0117.html","http://archives.neohapsis.com/archives/bugtraq/2012-04/0131.html","http://archives.neohapsis.com/archives/bugtraq/2012-04/0140.html","http://archives.neohapsis.com/archives/bugtraq/2012-04/0146.html","http://archives.neohapsis.com/archives/bugtraq/2012-04/0163.html"],"products":["squid-cache:squid"],"source":"nvd","synced_at":"2026-10-19T20:24:00.973572543+00:00"},"epss":{"cve":"CVE-2012-2213","score":0.1218,"percentile":0.9616,"date":"2026-10-31"},"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."]}