Util-linux: util-linux: access control bypass due to improper hostname canonicalization_CVE-2026-3184

{
    "lastseen": "",
    "description": "A flaw was found in util-linux. Improper hostname canonicalization in the `login(1)` utility, when invoked with the `-h` option, can modify the supplied remote hostname before setting `PAM_RHOST`. A remote attacker could exploit this by providing a specially crafted hostname, potentially bypassing host-based Pluggable Authentication Modules (PAM) access control rules that rely on fully qualified domain names. This could lead to unauthorized access.",
    "published": "2026-04-03T18:43:45.725Z",
    "modified": "2026-04-08T13:34:50.167Z",
    "type": "cve",
    "title": "Util-linux: util-linux: access control bypass due to improper hostname canonicalization",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-3184\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2442570",
    "id": "CVE-2026-3184",
    "bulletinFamily": "",
    "cwe": [
        "CWE-289"
    ],
    "cvelist": null,
    "sourceData": "",
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    "cvss": {
        "score": 3.7,
        "severity": "LOW",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
        "version": "3.1"
    },
    "cvss2": [],
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        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Red Hat Enterprise Linux 10",
    "version": "",
    "vendor": "Red Hat",
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}