{
    "id": "CVE-2018-1000076",
    "published": "2018-03-13 15:29:00",
    "last_modified": "2026-06-17 01:32:22",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.0",
    "cvss_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-347",
    "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.",
    "epss_score": "0.02934",
    "epss_percentile": "0.86732",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-11 18:17:17",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "rubygems",
            "product": "rubygems"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://blog.rubygems.org/2018/02/15/2.7.6-released.html",
        "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html",
        "https://access.redhat.com/errata/RHSA-2018:3729",
        "https://access.redhat.com/errata/RHSA-2018:3730",
        "https://access.redhat.com/errata/RHSA-2018:3731",
        "https://access.redhat.com/errata/RHSA-2019:2028",
        "https://access.redhat.com/errata/RHSA-2020:0542",
        "https://access.redhat.com/errata/RHSA-2020:0591",
        "https://access.redhat.com/errata/RHSA-2020:0663",
        "https://github.com/rubygems/rubygems/commit/f5042b879259b1f1ce95a0c5082622c646376693",
        "https://lists.debian.org/debian-lts-announce/2018/04/msg00000.html",
        "https://lists.debian.org/debian-lts-announce/2018/04/msg00001.html",
        "https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html",
        "https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html",
        "https://lists.debian.org/debian-lts-announce/2019/05/msg00028.html",
        "https://usn.ubuntu.com/3621-1/",
        "https://www.debian.org/security/2018/dsa-4219",
        "https://www.debian.org/security/2018/dsa-4259",
        "http://blog.rubygems.org/2018/02/15/2.7.6-released.html",
        "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html",
        "https://access.redhat.com/errata/RHSA-2018:3729",
        "https://access.redhat.com/errata/RHSA-2018:3730",
        "https://access.redhat.com/errata/RHSA-2018:3731",
        "https://access.redhat.com/errata/RHSA-2019:2028",
        "https://access.redhat.com/errata/RHSA-2020:0542"
    ]
}