{"id":"CVE-2011-5239","aliases":["EUVD-2011-5139","GHSA-33p2-5mfj-r94r"],"status":"published","title":"CiviCRM 4.0.5 and 4.1.1 does not verify that the server hostname matches a domain name in the...","description":"CiviCRM 4.0.5 and 4.1.1 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.","severity":{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00527,"percentile":0.44868,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2012-11-06T11:00:00Z","modified":"2026-06-16T23:36:12Z","products":[{"vendor":"civicrm","product":"civicrm"}],"references":[{"url":"http://www.unrest.ca/peerjacking","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-5239"},{"url":"https://github.com/advisories/GHSA-33p2-5mfj-r94r"}],"sources":{"cve":[{"id":"CVE-2011-5239","description":"CiviCRM 4.0.5 and 4.1.1 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.","status":"published","published":"2012-11-06T11:00:00Z","modified":"2024-09-17T03:58:59.98Z","updated_at":"2026-11-02T14:35:36.252742Z"}],"euvd":[{"id":"EUVD-2011-5139","description":"CiviCRM 4.0.5 and 4.1.1 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.","status":"published","published":"2012-11-06T11:00:00Z","modified":"2024-09-17T03:58:59Z","updated_at":"2026-11-03T00:28:27.115818Z"}],"ghsa":[{"id":"GHSA-33p2-5mfj-r94r","title":"CiviCRM 4.0.5 and 4.1.1 does not verify that the server hostname matches a domain name in the...","description":"CiviCRM 4.0.5 and 4.1.1 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.","status":"published","published":"2022-05-17T05:18:47Z","modified":"2023-01-28T05:03:45Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:44:02.530855Z"}],"nvd":[{"id":"CVE-2011-5239","description":"CiviCRM 4.0.5 and 4.1.1 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.","status":"published","published":"2012-11-06T12:21:26.93Z","modified":"2026-06-16T23:36:12.363Z","cvss":[{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:12.639283Z"}]}}