{"id":"UBUNTU-CVE-2015-8855","details":"The semver package before 4.3.2 for Node.js allows attackers to cause a denial of service (CPU consumption) via a long version string, aka a \"regular expression denial of service (ReDoS).\"","modified":"2026-02-04T02:55:13.353933Z","published":"2017-01-23T21:59:00Z","related":["USN-4776-1"],"upstream":["CVE-2015-8855"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2015-8855"},{"type":"REPORT","url":"https://nodesecurity.io/advisories/semver_redos"},{"type":"REPORT","url":"https://github.com/npm/npm/releases/tag/v2.7.5"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2015-8855"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4776-1"}],"affected":[{"package":{"name":"node-semver","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/node-semver@2.1.0-2ubuntu0.0.1~esm1?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.0-2ubuntu0.0.1~esm1"}]}],"versions":["2.1.0-2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_version":"2.1.0-2ubuntu0.0.1~esm1","binary_name":"libjs-semver"},{"binary_version":"2.1.0-2ubuntu0.0.1~esm1","binary_name":"node-semver"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-8855.json"}},{"package":{"name":"node-semver","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/node-semver@2.1.0-2ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.0-2ubuntu0.1~esm1"}]}],"versions":["2.1.0-2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"2.1.0-2ubuntu0.1~esm1","binary_name":"libjs-semver"},{"binary_version":"2.1.0-2ubuntu0.1~esm1","binary_name":"node-semver"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-8855.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}