{"id":"CVE-2012-2213","aliases":["EUVD-2012-2207","GHSA-4xhr-2rmp-vfjq"],"status":"disputed","title":"** DISPUTED ** Squid 3.1.9 allows remote attackers to bypass the access configuration for the...","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","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.1218,"percentile":0.96188,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-264"],"published":"2012-04-28T10:00:00Z","modified":"2026-06-16T23:41:11Z","products":[{"vendor":"squid-cache","product":"squid"}],"references":[{"url":"http://archives.neohapsis.com/archives/bugtraq/2012-04/0146.html","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://archives.neohapsis.com/archives/bugtraq/2012-04/0163.html","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://archives.neohapsis.com/archives/bugtraq/2012-04/0131.html","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://archives.neohapsis.com/archives/bugtraq/2012-04/0165.html","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://archives.neohapsis.com/archives/bugtraq/2012-04/0117.html","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://archives.neohapsis.com/archives/bugtraq/2012-04/0140.html","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2012-2213"},{"url":"https://github.com/advisories/GHSA-4xhr-2rmp-vfjq"}],"sources":{"cve":[{"id":"CVE-2012-2213","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","status":"disputed","published":"2012-04-28T10:00:00Z","modified":"2024-09-16T22:19:37.657Z","updated_at":"2026-11-02T14:34:49.937255Z"}],"euvd":[{"id":"EUVD-2012-2207","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","status":"published","published":"2012-04-28T10:00:00Z","modified":"2024-09-16T22:19:37Z","updated_at":"2026-11-03T00:55:04.418269Z"}],"ghsa":[{"id":"GHSA-4xhr-2rmp-vfjq","title":"** DISPUTED ** Squid 3.1.9 allows remote attackers to bypass the access configuration for the...","description":"** DISPUTED ** 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.","status":"published","published":"2022-05-17T05:30:42Z","modified":"2023-01-28T05:04:09Z","updated_at":"2026-11-02T14:44:07.246935Z"}],"nvd":[{"id":"CVE-2012-2213","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","status":"disputed","published":"2012-04-28T10:06:13.273Z","modified":"2026-06-16T23:41:11.623Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-264"],"updated_at":"2026-11-02T14:02:13.901526Z"}]}}