{"id":"CVE-2016-7153","aliases":["EUVD-2016-8021","GHSA-64x6-q8pq-xjmg","UBUNTU-CVE-2016-7153"],"status":"published","title":"The HTTP/2 protocol does not consider the role of the TCP congestion window in providing...","description":"The HTTP/2 protocol does not consider the role of the TCP congestion window in providing information about content length, which makes it easier for remote attackers to obtain cleartext data by leveraging a web-browser configuration in which third-party cookies are sent, aka a \"HEIST\" attack.","severity":{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.12766,"percentile":0.96301,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-200"],"published":"2016-09-06T10:00:00Z","modified":"2026-06-17T00:52:41Z","affected":[{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"oxide-qt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.9.5-0ubuntu1","1.10.3-0ubuntu0.15.10.1","1.10.3-0ubuntu0.15.10.2","1.11.3-0ubuntu3","1.11.4-0ubuntu1","1.11.5-0ubuntu1","1.12.5-0ubuntu1","1.12.6-0ubuntu1","1.12.7-0ubuntu1","1.13.6-0ubuntu1","1.14.7-0ubuntu1","1.14.9-0ubuntu0.16.04.1","1.15.7-0ubuntu0.16.04.1","1.15.8-0ubuntu0.16.04.1","1.16.5-0ubuntu0.16.04.1","1.17.7-0ubuntu0.16.04.1","1.17.9-0ubuntu0.16.04.1","1.18.3-0ubuntu0.16.04.1","1.18.5-0ubuntu0.16.04.1","1.19.4-0ubuntu0.16.04.1","1.20.4-0ubuntu0.16.04.1","1.21.5-0ubuntu0.16.04.1"]}],"products":[{"vendor":"apple","product":"safari"},{"vendor":"google","product":"chrome"},{"vendor":"microsoft","product":"edge"},{"vendor":"microsoft","product":"internet_explorer"},{"vendor":"mozilla","product":"firefox"},{"vendor":"opera","product":"opera_browser"}],"references":[{"url":"http://www.securitytracker.com/id/1036741","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"http://www.securitytracker.com/id/1036742","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"https://tom.vg/papers/heist_blackhat2016.pdf","tags":["x_refsource_MISC","x_transferred","Technical Description","report"]},{"url":"http://www.securitytracker.com/id/1036745","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"http://arstechnica.com/security/2016/08/new-attack-steals-ssns-e-mail-addresses-and-more-from-https-pages/","tags":["x_refsource_MISC","x_transferred","Technical Description","report"]},{"url":"http://www.securitytracker.com/id/1036744","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"http://www.securitytracker.com/id/1036743","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"http://www.securityfocus.com/bid/92773","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://www.securitytracker.com/id/1036746","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-7153"},{"url":"http://arstechnica.com/security/2016/08/new-attack-steals-ssns-e-mail-addresses-and-more-from-https-pages"},{"url":"https://github.com/advisories/GHSA-64x6-q8pq-xjmg"},{"url":"https://ubuntu.com/security/CVE-2016-7153","tags":["report"]},{"url":"https://www.blackhat.com/docs/us-16/materials/us-16-VanGoethem-HEIST-HTTP-Encrypted-Information-Can-Be-Stolen-Through-TCP-Windows-wp.pdf","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2016-7153","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2016-7153","description":"The HTTP/2 protocol does not consider the role of the TCP congestion window in providing information about content length, which makes it easier for remote attackers to obtain cleartext data by leveraging a web-browser configuration in which third-party cookies are sent, aka a \"HEIST\" attack.","status":"published","published":"2016-09-06T10:00:00Z","modified":"2024-08-06T01:50:47.639Z","updated_at":"2026-11-02T14:33:36.483151Z"}],"euvd":[{"id":"EUVD-2016-8021","description":"The HTTP/2 protocol does not consider the role of the TCP congestion window in providing information about content length, which makes it easier for remote attackers to obtain cleartext data by leveraging a web-browser configuration in which third-party cookies are sent, aka a \"HEIST\" attack.","status":"published","published":"2016-09-06T10:00:00Z","modified":"2024-08-06T01:50:47Z","updated_at":"2026-11-03T02:22:34.032839Z"}],"ghsa":[{"id":"GHSA-64x6-q8pq-xjmg","title":"The HTTP/2 protocol does not consider the role of the TCP congestion window in providing...","description":"The HTTP/2 protocol does not consider the role of the TCP congestion window in providing information about content length, which makes it easier for remote attackers to obtain cleartext data by leveraging a web-browser configuration in which third-party cookies are sent, aka a \"HEIST\" attack.","status":"published","published":"2022-05-17T02:58:38Z","modified":"2025-04-12T13:03:47Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T15:01:28.663035Z"}],"nvd":[{"id":"CVE-2016-7153","description":"The HTTP/2 protocol does not consider the role of the TCP congestion window in providing information about content length, which makes it easier for remote attackers to obtain cleartext data by leveraging a web-browser configuration in which third-party cookies are sent, aka a \"HEIST\" attack.","status":"published","published":"2016-09-06T10:59:01.493Z","modified":"2026-06-17T00:52:41.697Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:03:29.893676Z"}],"osv":[{"id":"UBUNTU-CVE-2016-7153","description":"The HTTP/2 protocol does not consider the role of the TCP congestion window in providing information about content length, which makes it easier for remote attackers to obtain cleartext data by leveraging a web-browser configuration in which third-party cookies are sent, aka a \"HEIST\" attack.","status":"published","published":"2016-09-06T10:59:00Z","modified":"2026-04-22T10:56:01.452803Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:12.994319Z"}]}}