{"id":"CVE-2015-8855","aliases":["CLSA-2026-1773793043","DEBIAN-CVE-2015-8855","EUVD-2017-0328","GHSA-x6fg-f45m-jf5q","UBUNTU-CVE-2015-8855","USN-4776-1"],"status":"published","title":"Regular Expression Denial of Service in semver","description":"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).\"","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":0.06887,"percentile":0.94113,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1333","CWE-399"],"published":"2017-01-23T21:00:00Z","modified":"2026-10-15T09:47:46Z","fixes":[{"ecosystem":"npm","package":"semver","fixed_in":["4.3.2"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"node-semver","fixed_in":["5.3.0-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"node-semver","fixed_in":["5.3.0-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"node-semver","fixed_in":["5.3.0-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:14.04:LTS","package":"node-semver","fixed_in":["2.1.0-2ubuntu0.0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"node-semver","fixed_in":["2.1.0-2ubuntu0.1~esm1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"semver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.4"},{"fixed":"4.3.2"}]}]},{"source":"osv","ecosystem":"TuxCare:npm","package":"semver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.3.2-tuxcare.0"},{"fixed":"2.3.2-tuxcare.1"}]}],"versions":["2.3.2"],"bundled":2},{"source":"osv","ecosystem":"Debian:12","package":"node-semver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.3.0-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"node-semver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.3.0-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"node-semver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.3.0-1"}]}]},{"source":"osv","ecosystem":"npm","package":"semver","ranges":[{"type":"SEMVER","events":[{"introduced":"1.0.4"},{"fixed":"4.3.2"}]}]},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"node-semver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.0-2ubuntu0.0.1~esm1"}]}],"versions":["2.1.0-2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"node-semver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.0-2ubuntu0.1~esm1"}]}],"versions":["2.1.0-2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"node-semver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.0-2ubuntu0.0.1~esm1"}]}],"versions":["2.1.0-2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"node-semver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.0-2ubuntu0.1~esm1"}]}],"versions":["2.1.0-2"]}],"products":[{"vendor":"nodejs","product":"node.js"}],"references":[{"url":"http://www.securityfocus.com/bid/86957","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory","web"]},{"url":"https://nodesecurity.io/advisories/31","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","advisory","fix"]},{"url":"http://www.openwall.com/lists/oss-security/2016/04/20/11","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory","article","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-8855","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-x6fg-f45m-jf5q","tags":["advisory"]},{"url":"https://www.npmjs.com/advisories/31","tags":["web"]},{"url":"https://www.owasp.org/index.php/Regular_expression_Denial_of_Service_-_ReDoS","tags":["web"]},{"url":"https://github.com/github/advisory-database/pull/7102","tags":["web"]},{"url":"https://github.com/npm/node-semver/commit/5c4c9f6e26c7052a42b5ced2a7481c5c9b4363a0","tags":["web"]},{"url":"https://github.com/npm/node-semver/commit/c80180d8341a8ada0236815c29a2be59864afd70","tags":["web"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2015-8855","tags":["advisory"]},{"url":"https://github.com/npm/node-semver","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2015-8855","tags":["report"]},{"url":"https://nodesecurity.io/advisories/semver_redos","tags":["report"]},{"url":"https://github.com/npm/npm/releases/tag/v2.7.5","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2015-8855","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-4776-1","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2015-8855","description":"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).\"","status":"published","published":"2017-01-23T21:00:00Z","modified":"2024-08-06T08:29:22.086Z","updated_at":"2026-11-02T14:35:40.900357Z"}],"euvd":[{"id":"EUVD-2017-0328","description":"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).\"","status":"published","published":"2017-01-23T21:00:00Z","modified":"2024-08-06T08:29:22Z","updated_at":"2026-11-03T01:57:25.869767Z"}],"ghsa":[{"id":"GHSA-x6fg-f45m-jf5q","title":"Regular Expression Denial of Service in semver","description":"Versions 4.3.1 and earlier of `semver` are affected by a regular expression denial of service vulnerability when extremely long version strings are parsed.\n\n\n\n## Recommendation\n\nUpdate to version 4.3.2 or later","status":"published","published":"2017-10-24T18:33:36Z","modified":"2026-03-03T20:03:29Z","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":"2026-11-02T14:39:30.031684Z"}],"nvd":[{"id":"CVE-2015-8855","description":"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).\"","status":"published","published":"2017-01-23T21:59:00.503Z","modified":"2026-06-17T00:35:22.467Z","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":"2026-11-02T14:03:16.97467Z"}],"osv":[{"id":"CVE-2015-8855","description":"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).\"","status":"published","published":"2017-01-23T21:59:00Z","modified":"2026-04-10T03:45:35.159436Z","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":"2026-11-02T15:44:01.068991Z"},{"id":"DEBIAN-CVE-2015-8855","description":"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).\"","status":"published","published":"2017-01-23T21:59:00.503Z","modified":"2026-09-09T07:01:45.263679344Z","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":"2026-11-02T15:45:27.04239Z"},{"id":"GHSA-x6fg-f45m-jf5q","title":"Regular Expression Denial of Service in semver","description":"Versions 4.3.1 and earlier of `semver` are affected by a regular expression denial of service vulnerability when extremely long version strings are parsed.\n\n\n\n## Recommendation\n\nUpdate to version 4.3.2 or later","status":"published","published":"2017-10-24T18:33:36Z","modified":"2026-03-04T15:06:31.969299Z","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":"2026-11-02T15:46:59.484835Z"},{"id":"UBUNTU-CVE-2015-8855","description":"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).\"","status":"published","published":"2017-01-23T21:59:00Z","modified":"2026-02-04T02:55:13.353933Z","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":"2026-11-02T15:54:11.100633Z"},{"id":"CLSA-2026-1773793043","title":"TuxCare security update for semver (2 CVEs)","description":"TuxCare rebuilt semver to address 2 CVEs. Fixed in 2.3.2-tuxcare.1.","status":"published","published":"2026-08-04T14:52:13Z","modified":"2026-10-15T09:47:46.685411913Z","updated_at":"2026-11-02T15:43:43.621843Z"},{"id":"USN-4776-1","title":"node-semver vulnerability","description":"It was discovered that semver incorrectly handled certain inputs. A remote\nattacker could possibly use this issue to cause a denial of service.","status":"published","published":"2021-03-15T20:51:27Z","modified":"2026-06-29T13:48:15.783965078Z","updated_at":"2026-11-02T16:58:15.159055Z"}]}}