{
    "id": "CVE-2017-17458",
    "published": "2017-12-07 18:29:00",
    "last_modified": "2026-06-17 01:10:49",
    "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-78",
    "description": "In Mercurial before 4.4.1, it is possible that a specially malformed repository can cause Git subrepositories to run arbitrary code in the form of a .git/hooks/post-update script checked into the repository. Typical use of Mercurial prevents construction of such repositories, but they can be created programmatically.",
    "epss_score": "0.06331",
    "epss_percentile": "0.93440",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-06 18:17:15",
    "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": "mercurial",
            "product": "mercurial"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://www.securityfocus.com/bid/102926",
        "https://bz.mercurial-scm.org/show_bug.cgi?id=5730",
        "https://confluence.atlassian.com/sourcetreekb/sourcetree-security-advisory-2018-01-24-942834324.html",
        "https://lists.debian.org/debian-lts-announce/2017/12/msg00027.html",
        "https://lists.debian.org/debian-lts-announce/2018/07/msg00005.html",
        "https://lists.debian.org/debian-lts-announce/2018/07/msg00041.html",
        "https://lists.debian.org/debian-lts-announce/2020/07/msg00032.html",
        "https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-November/107333.html",
        "https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.4.1_.282017-11-07.29",
        "http://www.securityfocus.com/bid/102926",
        "https://bz.mercurial-scm.org/show_bug.cgi?id=5730",
        "https://confluence.atlassian.com/sourcetreekb/sourcetree-security-advisory-2018-01-24-942834324.html",
        "https://lists.debian.org/debian-lts-announce/2017/12/msg00027.html",
        "https://lists.debian.org/debian-lts-announce/2018/07/msg00005.html",
        "https://lists.debian.org/debian-lts-announce/2018/07/msg00041.html",
        "https://lists.debian.org/debian-lts-announce/2020/07/msg00032.html",
        "https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-November/107333.html",
        "https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.4.1_.282017-11-07.29"
    ]
}