Link Preview JS: vunerable to IPv6 and internal loopback attacks_CVE-2026-43897

{
    "lastseen": "",
    "description": "Link Preview JS extracts web links information. Prior to 4.0.1, the library did not check for IPv6 loopback attacks. There was also a DNS attack, where an address could be resolved into an internal IP. This could cause internal data leaks. This vulnerability is fixed in 4.0.1.",
    "published": "2026-05-11T21:14:40.495Z",
    "modified": "2026-05-11T21:14:40.495Z",
    "type": "cve",
    "title": "Link Preview JS: vunerable to IPv6 and internal loopback attacks",
    "source": "GitHub_M",
    "references": "https://github.com/OP-Engineering/link-preview-js/security/advisories/GHSA-4gp8-rjrq-ch6q\nhttps://github.com/OP-Engineering/link-preview-js/pull/179\nhttps://github.com/OP-Engineering/link-preview-js/commit/4396d48909fab37553c0e93e26447fe218363ede\nhttps://github.com/OP-Engineering/link-preview-js/releases/tag/4.0.1",
    "id": "CVE-2026-43897",
    "bulletinFamily": "",
    "cwe": [
        "CWE-918"
    ],
    "cvelist": null,
    "sourceData": "OP-Engineering link-preview-js < 4.0.1",
    "sourceHref": "",
    "cvss": {
        "score": 8.7,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
    "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": "link-preview-js",
    "version": "< 4.0.1",
    "vendor": "OP-Engineering",
    "ai_description": "The library is vulnerable to IPv6 loopback attacks and DNS attacks, potentially causing internal data leaks.",
    "ai_severity": "High",
    "ai_vendor": "OP-Engineering",
    "ai_product": "link-preview-js",
    "ai_version": "< 4.0.1",
    "ai_score": 8.7
}