{"cve":"CVE-2016-2515","nvd":{"published":"2016-04-13T16:59:13.473","modified":"2026-06-17T00:44:12.203","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-399"],"references":["http://www.openwall.com/lists/oss-security/2016/02/20/1","http://www.openwall.com/lists/oss-security/2016/02/20/2","https://bugzilla.redhat.com/show_bug.cgi?id=1309721","https://github.com/hueniverse/hawk/commit/0833f99ba64558525995a7e21d4093da1f3e15fa","https://github.com/hueniverse/hawk/issues/168"],"products":["hawk_project:hawk"],"source":"nvd","synced_at":"2026-10-19T20:38:51.654415212+00:00"},"epss":{"cve":"CVE-2016-2515","score":0.0337,"percentile":0.88753,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-jcpv-g9rr-qxrc","url":"https://osv.dev/vulnerability/GHSA-jcpv-g9rr-qxrc","summary":"Regular Expression Denial of Service in hawk","modified":"2023-11-08T03:58:24.587802Z","packages":[{"ecosystem":"npm","name":"hawk","purl":"pkg:npm/hawk","ranges":[">=4.0.0 <4.1.1"],"fixed":["4.1.1"]},{"ecosystem":"npm","name":"hawk","purl":"pkg:npm/hawk","ranges":["<3.1.3"],"fixed":["3.1.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}