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.
Update to hawk version 4.1.1 or later.
www.openwall.com/lists/oss-security/2016/02/20/1
www.openwall.com/lists/oss-security/2016/02/20/2
bugzilla.redhat.com/show_bug.cgi?id=1309721
github.com/advisories/GHSA-jcpv-g9rr-qxrc
github.com/hueniverse/hawk
github.com/hueniverse/hawk/commit/0833f99ba64558525995a7e21d4093da1f3e15fa
github.com/hueniverse/hawk/issues/168
nvd.nist.gov/vuln/detail/CVE-2016-2515
www.npmjs.com/advisories/77