{"id":"CVE-2016-2515","aliases":["CLSA-2026-1772583205","CLSA-2026-1773015258","CLSA-2026-1774743811","CLSA-2026-1774743812","CLSA-2026-1774743813","EUVD-2018-0286","GHSA-jcpv-g9rr-qxrc"],"status":"published","title":"Regular Expression Denial of Service in hawk","description":"Hawk before 3.1.3 and 4.x before 4.1.1 allow remote attackers to cause a denial of service (CPU consumption or partial outage) via a long (1) header or (2) URI that is matched against an improper regular expression.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.0337,"percentile":0.88833,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1333","CWE-399"],"published":"2016-04-13T16:00:00Z","modified":"2026-10-20T10:47:25Z","fixes":[{"ecosystem":"npm","package":"hawk","fixed_in":["3.1.3","4.1.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"hawk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.3"}]}]},{"source":"ghsa","ecosystem":"npm","package":"hawk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"fixed":"4.1.1"}]}]},{"source":"osv","ecosystem":"TuxCare:npm","package":"hawk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.3.1-tuxcare.0"},{"fixed":"2.3.1-tuxcare.1"}]}],"versions":["2.3.1"],"bundled":2},{"source":"osv","ecosystem":"TuxCare:npm","package":"hawk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.1.0-tuxcare.0"},{"fixed":"3.1.0-tuxcare.1"}]}],"versions":["3.1.0"],"bundled":2},{"source":"osv","ecosystem":"TuxCare:npm","package":"hawk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.13.1-tuxcare.0"},{"fixed":"0.13.1-tuxcare.1"}]}],"versions":["0.13.1"],"bundled":2},{"source":"osv","ecosystem":"TuxCare:npm","package":"hawk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0-tuxcare.0"},{"fixed":"1.0.0-tuxcare.1"}]}],"versions":["1.0.0"],"bundled":2},{"source":"osv","ecosystem":"TuxCare:npm","package":"hawk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.1.1-tuxcare.0"},{"fixed":"1.1.1-tuxcare.1"}]}],"versions":["1.1.1"],"bundled":2},{"source":"osv","ecosystem":"npm","package":"hawk","ranges":[{"type":"SEMVER","events":[{"introduced":"4.0.0"},{"fixed":"4.1.1"}]}]},{"source":"osv","ecosystem":"npm","package":"hawk","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.1.3"}]}]}],"products":[{"vendor":"hawk_project","product":"hawk"}],"references":[{"url":"https://github.com/hueniverse/hawk/commit/0833f99ba64558525995a7e21d4093da1f3e15fa","tags":["x_refsource_CONFIRM","x_transferred","Patch","fix","web"]},{"url":"https://github.com/hueniverse/hawk/issues/168","tags":["x_refsource_CONFIRM","x_transferred","Patch","fix","web"]},{"url":"https://nodesecurity.io/advisories/77","tags":["x_refsource_MISC","x_transferred","advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1309721","tags":["x_refsource_CONFIRM","x_transferred","report","web"]},{"url":"http://www.openwall.com/lists/oss-security/2016/02/20/1","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://www.openwall.com/lists/oss-security/2016/02/20/2","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-2515","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-jcpv-g9rr-qxrc","tags":["advisory"]},{"url":"https://www.npmjs.com/advisories/77","tags":["web"]},{"url":"https://github.com/hueniverse/hawk","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2016-2515","description":"Hawk before 3.1.3 and 4.x before 4.1.1 allow remote attackers to cause a denial of service (CPU consumption or partial outage) via a long (1) header or (2) URI that is matched against an improper regular expression.","status":"published","published":"2016-04-13T16:00:00Z","modified":"2024-08-05T23:32:20.711Z","updated_at":"2026-11-02T14:33:33.424551Z"}],"euvd":[{"id":"EUVD-2018-0286","description":"Hawk before 3.1.3 and 4.x before 4.1.1 allow remote attackers to cause a denial of service (CPU consumption or partial outage) via a long (1) header or (2) URI that is matched against an improper regular expression.","status":"published","published":"2016-04-13T16:00:00Z","modified":"2024-08-05T23:32:20Z","updated_at":"2026-11-03T02:22:52.753944Z"}],"ghsa":[{"id":"GHSA-jcpv-g9rr-qxrc","title":"Regular Expression Denial of Service in hawk","description":"Versions of `hawk` prior to 3.1.3, or 4.x prior to 4.1.1 are affected by a regular expression denial of service vulnerability related to excessively long headers and URI's.\n\n\n\n## Recommendation\n\nUpdate to hawk version 4.1.1 or later.","status":"published","published":"2018-07-31T22:52:00Z","modified":"2023-04-11T00:22:15Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T14:36:50.476488Z"}],"nvd":[{"id":"CVE-2016-2515","description":"Hawk before 3.1.3 and 4.x before 4.1.1 allow remote attackers to cause a denial of service (CPU consumption or partial outage) via a long (1) header or (2) URI that is matched against an improper regular expression.","status":"published","published":"2016-04-13T16:59:13.473Z","modified":"2026-06-17T00:44:12.203Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-399"],"updated_at":"2026-11-02T14:03:23.795791Z"}],"osv":[{"id":"CVE-2016-2515","description":"Hawk before 3.1.3 and 4.x before 4.1.1 allow remote attackers to cause a denial of service (CPU consumption or partial outage) via a long (1) header or (2) URI that is matched against an improper regular expression.","status":"published","published":"2016-04-13T16:59:13.473Z","modified":"2026-10-20T10:47:25.918696784Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:02.114472Z"},{"id":"GHSA-jcpv-g9rr-qxrc","title":"Regular Expression Denial of Service in hawk","description":"Versions of `hawk` prior to 3.1.3, or 4.x prior to 4.1.1 are affected by a regular expression denial of service vulnerability related to excessively long headers and URI's.\n\n\n\n## Recommendation\n\nUpdate to hawk version 4.1.1 or later.","status":"published","published":"2018-07-31T22:52:00Z","modified":"2023-11-08T03:58:24.587802Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T15:46:50.336262Z"},{"id":"CLSA-2026-1772583205","title":"TuxCare security update for hawk (2 CVEs)","description":"TuxCare rebuilt hawk to address 2 CVEs. Fixed in 2.3.1-tuxcare.1.","status":"published","published":"2026-08-04T14:52:10Z","modified":"2026-10-15T09:45:42.101300215Z","updated_at":"2026-11-02T15:43:43.249928Z"},{"id":"CLSA-2026-1773015258","title":"TuxCare security update for hawk (2 CVEs)","description":"TuxCare rebuilt hawk to address 2 CVEs. Fixed in 3.1.0-tuxcare.1.","status":"published","published":"2026-08-04T14:52:11Z","modified":"2026-10-15T09:45:42.104052767Z","updated_at":"2026-11-02T15:43:43.249928Z"},{"id":"CLSA-2026-1774743811","title":"TuxCare security update for hawk (2 CVEs)","description":"TuxCare rebuilt hawk to address 2 CVEs. Fixed in 0.13.1-tuxcare.1.","status":"published","published":"2026-08-04T14:52:15Z","modified":"2026-10-15T09:47:48.474624154Z","updated_at":"2026-11-02T15:43:43.621843Z"},{"id":"CLSA-2026-1774743812","title":"TuxCare security update for hawk (2 CVEs)","description":"TuxCare rebuilt hawk to address 2 CVEs. Fixed in 1.0.0-tuxcare.1.","status":"published","published":"2026-08-04T14:52:15Z","modified":"2026-10-15T09:47:48.499859612Z","updated_at":"2026-11-02T15:43:43.621843Z"},{"id":"CLSA-2026-1774743813","title":"TuxCare security update for hawk (2 CVEs)","description":"TuxCare rebuilt hawk to address 2 CVEs. Fixed in 1.1.1-tuxcare.1.","status":"published","published":"2026-08-04T14:52:15Z","modified":"2026-10-15T09:47:48.406639226Z","updated_at":"2026-11-02T15:43:43.621843Z"}]}}