{"id":"CVE-2018-1000076","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-1000076","generatedAt":"2026-10-29T00:35:14.188Z","title":"RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Verification of Cryptographic Signature…","description":"RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Verification of Cryptographic Signature vulnerability in package.rb that can result in a mis-signed gem could be installed, as the tarball would contain multiple gem signatures.. This vulnerability appears to have been fixed in 2.7.6.","published":"2018-03-13T15:29:01.000Z","lastModified":"2026-06-17T01:32:22.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-347"],"affected":["rubygems/rubygems","debian/debian linux"],"epss":{"score":0.02934,"percentile":0.87024,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (2.93%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://blog.rubygems.org/2018/02/15/2.7.6-released.html","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html","source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2018:3729","source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2018:3730","source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2018:3731","source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2019:2028","source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2020:0542","source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2020:0591","source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2020:0663","source":"cve@mitre.org"},{"url":"https://github.com/rubygems/rubygems/commit/f5042b879259b1f1ce95a0c5082622c646376693","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2018/04/msg00000.html","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2018/04/msg00001.html","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html","source":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html","source":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2019/05/msg00028.html","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3621-1/","source":"cve@mitre.org"},{"url":"https://www.debian.org/security/2018/dsa-4219","source":"cve@mitre.org"},{"url":"https://www.debian.org/security/2018/dsa-4259","source":"cve@mitre.org"},{"url":"http://blog.rubygems.org/2018/02/15/2.7.6-released.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2018:3729","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2018:3730","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2018:3731","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2019:2028","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2020:0542","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2020:0591","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2020:0663","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/rubygems/rubygems/commit/f5042b879259b1f1ce95a0c5082622c646376693","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2018/04/msg00000.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2018/04/msg00001.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2019/05/msg00028.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3621-1/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2018/dsa-4219","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2018/dsa-4259","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-1000076","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}