{"id":"CVE-2011-0398","aliases":["EUVD-2011-0424","GHSA-pvh5-5r6j-x2rh"],"status":"published","title":"The Piwik_Common::getIP function in Piwik before 1.1 does not properly determine the client IP...","description":"The Piwik_Common::getIP function in Piwik before 1.1 does not properly determine the client IP address, which allows remote attackers to bypass intended geolocation and logging functionality via (1) use of a private (aka RFC 1918) address behind a proxy server or (2) spoofing of the X-Forwarded-For HTTP header.","severity":{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-06","score":0.01338,"percentile":0.71389,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-264"],"published":"2011-01-10T19:18:00Z","modified":"2026-06-16T23:27:16Z","products":[{"vendor":"matomo","product":"matomo"}],"references":[{"url":"http://www.securityfocus.com/bid/45787","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://osvdb.org/70384","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://dev.piwik.org/trac/ticket/567","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/64641","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://piwik.org/blog/2011/01/piwik-1-1-2/","tags":["x_refsource_CONFIRM","x_transferred","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-0398"},{"url":"http://piwik.org/blog/2011/01/piwik-1-1-2"},{"url":"https://github.com/advisories/GHSA-pvh5-5r6j-x2rh"}],"sources":{"cve":[{"id":"CVE-2011-0398","description":"The Piwik_Common::getIP function in Piwik before 1.1 does not properly determine the client IP address, which allows remote attackers to bypass intended geolocation and logging functionality via (1) use of a private (aka RFC 1918) address behind a proxy server or (2) spoofing of the X-Forwarded-For HTTP header.","status":"published","published":"2011-01-10T19:18:00Z","modified":"2024-08-06T21:51:08.636Z","updated_at":"2026-11-02T14:35:39.447402Z"}],"euvd":[{"id":"EUVD-2011-0424","description":"The Piwik_Common::getIP function in Piwik before 1.1 does not properly determine the client IP address, which allows remote attackers to bypass intended geolocation and logging functionality via (1) use of a private (aka RFC 1918) address behind a proxy server or (2) spoofing of the X-Forwarded-For HTTP header.","status":"published","published":"2011-01-10T19:18:00Z","modified":"2024-08-06T21:51:08Z","updated_at":"2026-11-03T01:56:00.564642Z"}],"ghsa":[{"id":"GHSA-pvh5-5r6j-x2rh","title":"The Piwik_Common::getIP function in Piwik before 1.1 does not properly determine the client IP...","description":"The Piwik_Common::getIP function in Piwik before 1.1 does not properly determine the client IP address, which allows remote attackers to bypass intended geolocation and logging functionality via (1) use of a private (aka RFC 1918) address behind a proxy server or (2) spoofing of the X-Forwarded-For HTTP header.","status":"published","published":"2022-05-13T01:30:29Z","modified":"2025-04-11T03:43:53Z","updated_at":"2026-11-02T15:01:07.282751Z"}],"nvd":[{"id":"CVE-2011-0398","description":"The Piwik_Common::getIP function in Piwik before 1.1 does not properly determine the client IP address, which allows remote attackers to bypass intended geolocation and logging functionality via (1) use of a private (aka RFC 1918) address behind a proxy server or (2) spoofing of the X-Forwarded-For HTTP header.","status":"published","published":"2011-01-10T20:00:17.14Z","modified":"2026-06-16T23:27:16.883Z","cvss":[{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-264"],"updated_at":"2026-11-02T14:02:06.042049Z"}]}}