{"id":"USN-4571-1","summary":"ruby-rack-cors vulnerability","details":"It was discovered that rack-cors did not properly handle relative file\npaths. An attacker could use this vulnerability to access arbitrary files.\n","modified":"2026-04-27T15:43:41.760388Z","published":"2020-10-05T18:20:07Z","related":["UBUNTU-CVE-2019-18978"],"upstream":["CVE-2019-18978","UBUNTU-CVE-2019-18978"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4571-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-18978"}],"affected":[{"package":{"name":"ruby-rack-cors","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/ruby-rack-cors@0.4.0-1+deb9u2build0.16.04.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.0-1+deb9u2build0.16.04.1"}]}],"versions":["0.4.0-1","0.4.0-1+deb9u1build0.16.04.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"0.4.0-1+deb9u2build0.16.04.1","binary_name":"ruby-rack-cors"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4571-1.json","cves_map":{"cves":[{"id":"CVE-2019-18978","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:16.04:LTS"}}}],"schema_version":"1.7.5"}