{"id":"CVE-2016-2049","aliases":["EUVD-2016-3154","GHSA-w7j5-jxx6-p7j4","UBUNTU-CVE-2016-2049"],"status":"published","title":"examples/consumer/common.php in JanRain PHP OpenID library (aka php-openid) improperly checks the...","description":"examples/consumer/common.php in JanRain PHP OpenID library (aka php-openid) improperly checks the openid.realm parameter against the SERVER_NAME element in the SERVER superglobal array, which might allow remote attackers to hijack the authentication of arbitrary users via vectors involving a crafted HTTP Host header.","severity":{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02171,"percentile":0.82405,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284"],"published":"2016-02-01T21:00:00Z","modified":"2026-06-17T00:43:19Z","affected":[{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"php-openid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.2-1.2","2.2.2-1.2ubuntu1"]}],"products":[{"vendor":"janrain","product":"php-openid"}],"references":[{"url":"http://www.openwall.com/lists/oss-security/2016/01/24/5","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2016/01/24/2","tags":["mailing-list","x_refsource_MLIST","x_transferred","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-2049"},{"url":"https://github.com/advisories/GHSA-w7j5-jxx6-p7j4"},{"url":"https://ubuntu.com/security/CVE-2016-2049","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2016-2049","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2016-2049","description":"examples/consumer/common.php in JanRain PHP OpenID library (aka php-openid) improperly checks the openid.realm parameter against the SERVER_NAME element in the SERVER superglobal array, which might allow remote attackers to hijack the authentication of arbitrary users via vectors involving a crafted HTTP Host header.","status":"published","published":"2016-02-01T21:00:00Z","modified":"2024-08-05T23:17:49.988Z","updated_at":"2026-11-02T14:33:33.424551Z"}],"euvd":[{"id":"EUVD-2016-3154","description":"examples/consumer/common.php in JanRain PHP OpenID library (aka php-openid) improperly checks the openid.realm parameter against the SERVER_NAME element in the SERVER superglobal array, which might allow remote attackers to hijack the authentication of arbitrary users via vectors involving a crafted HTTP Host header.","status":"published","published":"2016-02-01T21:00:00Z","modified":"2024-08-05T23:17:49Z","updated_at":"2026-11-03T02:22:55.100655Z"}],"ghsa":[{"id":"GHSA-w7j5-jxx6-p7j4","title":"examples/consumer/common.php in JanRain PHP OpenID library (aka php-openid) improperly checks the...","description":"examples/consumer/common.php in JanRain PHP OpenID library (aka php-openid) improperly checks the openid.realm parameter against the SERVER_NAME element in the SERVER superglobal array, which might allow remote attackers to hijack the authentication of arbitrary users via vectors involving a crafted HTTP Host header.","status":"published","published":"2022-05-17T03:58:34Z","modified":"2023-01-28T05:00:53Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:43:26.472457Z"}],"nvd":[{"id":"CVE-2016-2049","description":"examples/consumer/common.php in JanRain PHP OpenID library (aka php-openid) improperly checks the openid.realm parameter against the SERVER_NAME element in the SERVER superglobal array, which might allow remote attackers to hijack the authentication of arbitrary users via vectors involving a crafted HTTP Host header.","status":"published","published":"2016-02-01T21:59:03.987Z","modified":"2026-06-17T00:43:19.93Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:03:21.143462Z"}],"osv":[{"id":"UBUNTU-CVE-2016-2049","description":"examples/consumer/common.php in JanRain PHP OpenID library (aka php-openid) improperly checks the openid.realm parameter against the SERVER_NAME element in the SERVER superglobal array, which might allow remote attackers to hijack the authentication of arbitrary users via vectors involving a crafted HTTP Host header.","status":"published","published":"2016-02-01T21:59:00Z","modified":"2025-10-24T04:45:37Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:11.492576Z"}]}}