Libssh: libssh: denial of service via inefficient regular expression processing_CVE-2026-0967

{
    "lastseen": "",
    "description": "A flaw was found in libssh. A remote attacker, by controlling client configuration files or known_hosts files, could craft specific hostnames that when processed by the `match_pattern()` function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion, resulting in a Denial of Service (DoS) for the client.",
    "published": "2026-03-26T20:06:30.707Z",
    "modified": "2026-04-11T14:51:43.159Z",
    "type": "cve",
    "title": "Libssh: libssh: denial of service via inefficient regular expression processing",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-0967\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2436981\nhttps://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/",
    "id": "CVE-2026-0967",
    "bulletinFamily": "",
    "cwe": [
        "CWE-1333"
    ],
    "cvelist": null,
    "sourceData": "",
    "sourceHref": "",
    "cvss": {
        "score": 2.2,
        "severity": "LOW",
        "vector": "CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L",
        "version": "3.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Red Hat Enterprise Linux 10",
    "version": "",
    "vendor": "Red Hat",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}