{"id":"CVE-2011-1498","aliases":["DEBIAN-CVE-2011-1498","EUVD-2022-4023","GHSA-gw85-4gmf-m7rh"],"status":"published","title":"Exposure of Sensitive Information to an Unauthorized Actor in Apache HttpClient","description":"Apache HttpClient 4.x before 4.1.1 in Apache HttpComponents, when used with an authenticating proxy server, sends the Proxy-Authorization header to the origin server, which allows remote web servers to obtain sensitive information by logging this header.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.06685,"percentile":0.93947,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-200"],"published":"2011-07-07T21:00:00Z","modified":"2026-10-23T17:47:39Z","fixes":[{"ecosystem":"Maven","package":"org.apache.httpcomponents:httpclient","fixed_in":["4.1.1"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"httpcomponents-client","fixed_in":["4.1.1-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"httpcomponents-client","fixed_in":["4.1.1-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"httpcomponents-client","fixed_in":["4.1.1-1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.apache.httpcomponents:httpclient","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"fixed":"4.1.1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"httpcomponents-client","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.1-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"httpcomponents-client","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.1-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"httpcomponents-client","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.1-1"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.apache.httpcomponents:httpclient","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"fixed":"4.1.1"}]}],"versions":["4.0","4.0.1","4.0.2","4.0.3","4.1","4.1-alpha1","4.1-alpha2","4.1-beta1"]}],"products":[{"vendor":"apache","product":"httpclient"}],"references":[{"url":"http://marc.info/?l=httpclient-users\u0026m=129853896315461\u0026w=2","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://openwall.com/lists/oss-security/2011/04/08/1","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=709531","tags":["x_refsource_CONFIRM","x_transferred","report","web"]},{"url":"http://marc.info/?l=httpclient-users\u0026m=129856318011586\u0026w=2","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://marc.info/?l=httpclient-users\u0026m=129857589129183\u0026w=2","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://openwall.com/lists/oss-security/2011/04/07/7","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://issues.apache.org/jira/browse/HTTPCLIENT-1061","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"http://www.kb.cert.org/vuls/id/153049","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred","US Government Resource","web"]},{"url":"http://www.securityfocus.com/bid/46974","tags":["vdb-entry","x_refsource_BID","x_transferred","web"]},{"url":"http://marc.info/?l=httpclient-users\u0026m=129858274406594\u0026w=2","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://securityreason.com/securityalert/8298","tags":["third-party-advisory","x_refsource_SREASON","x_transferred","web"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061440.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"http://marc.info/?l=httpclient-users\u0026m=129858299106950\u0026w=2","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://www.apache.org/dist/httpcomponents/httpclient/RELEASE_NOTES-4.1.x.txt","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1498","tags":["advisory"]},{"url":"https://github.com/apache/httpcomponents-client/commit/a572756592c969affd0ce87885724e74839176fb","tags":["web"]},{"url":"https://github.com/advisories/GHSA-gw85-4gmf-m7rh"},{"url":"https://security-tracker.debian.org/tracker/CVE-2011-1498","tags":["advisory"]},{"url":"https://github.com/apache/httpcomponents-client","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2011-1498","description":"Apache HttpClient 4.x before 4.1.1 in Apache HttpComponents, when used with an authenticating proxy server, sends the Proxy-Authorization header to the origin server, which allows remote web servers to obtain sensitive information by logging this header.","status":"published","published":"2011-07-07T21:00:00Z","modified":"2024-08-06T22:28:41.803Z","updated_at":"2026-11-02T14:35:38.321377Z"}],"euvd":[{"id":"EUVD-2022-4023","description":"Apache HttpClient 4.x before 4.1.1 in Apache HttpComponents, when used with an authenticating proxy server, sends the Proxy-Authorization header to the origin server, which allows remote web servers to obtain sensitive information by logging this header.","status":"published","published":"2011-07-07T21:00:00Z","modified":"2024-08-06T22:28:41Z","updated_at":"2026-11-03T01:55:56.243798Z"}],"ghsa":[{"id":"GHSA-gw85-4gmf-m7rh","title":"Exposure of Sensitive Information to an Unauthorized Actor in Apache HttpClient","description":"Apache HttpClient 4.x before 4.1.1 in Apache HttpComponents, when used with an authenticating proxy server, sends the Proxy-Authorization header to the origin server, which allows remote web servers to obtain sensitive information by logging this header.","status":"published","published":"2022-05-17T05:39:03Z","modified":"2024-03-05T19:07:39Z","cwes":["CWE-200"],"updated_at":"2026-11-02T14:37:39.730152Z"}],"nvd":[{"id":"CVE-2011-1498","description":"Apache HttpClient 4.x before 4.1.1 in Apache HttpComponents, when used with an authenticating proxy server, sends the Proxy-Authorization header to the origin server, which allows remote web servers to obtain sensitive information by logging this header.","status":"published","published":"2011-07-07T21:55:01.663Z","modified":"2026-06-16T23:29:30.027Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:02:09.182398Z"}],"osv":[{"id":"CVE-2011-1498","description":"Apache HttpClient 4.x before 4.1.1 in Apache HttpComponents, when used with an authenticating proxy server, sends the Proxy-Authorization header to the origin server, which allows remote web servers to obtain sensitive information by logging this header.","status":"published","published":"2011-07-07T21:55:01Z","modified":"2026-04-10T03:41:44.485696Z","updated_at":"2026-11-02T15:43:57.991581Z"},{"id":"DEBIAN-CVE-2011-1498","description":"Apache HttpClient 4.x before 4.1.1 in Apache HttpComponents, when used with an authenticating proxy server, sends the Proxy-Authorization header to the origin server, which allows remote web servers to obtain sensitive information by logging this header.","status":"published","published":"2011-07-07T21:55:01.663Z","modified":"2026-10-23T17:47:39.662635603Z","updated_at":"2026-11-02T15:45:24.612044Z"},{"id":"GHSA-gw85-4gmf-m7rh","title":"Exposure of Sensitive Information to an Unauthorized Actor in Apache HttpClient","description":"Apache HttpClient 4.x before 4.1.1 in Apache HttpComponents, when used with an authenticating proxy server, sends the Proxy-Authorization header to the origin server, which allows remote web servers to obtain sensitive information by logging this header.","status":"published","published":"2022-05-17T05:39:03Z","modified":"2024-12-03T06:01:01.943495Z","cwes":["CWE-200"],"updated_at":"2026-11-02T15:46:48.191583Z"}]}}