lodash vulnerable to Prototype Pollution via array path bypass in `_.unset` and `_.omit`_CVE-2026-2950

{
    "lastseen": "",
    "description": "Impact:\n\nLodash versions 4.17.23 and earlier are vulnerable to prototype pollution in the _.unset and _.omit functions. The fix for (CVE-2025-13465: https://github.com/lodash/lodash/security/advisories/GHSA-xxjr-mmjv-4gpg) only guards against string key members, so an attacker can bypass the check by passing array-wrapped path segments. This allows deletion of properties from built-in prototypes such as Object.prototype, Number.prototype, and String.prototype.\n\nThe issue permits deletion of prototype properties but does not allow overwriting their original behavior.\n\nPatches:\n\nThis issue is patched in 4.18.0.\n\nWorkarounds:\n\nNone. Upgrade to the patched version.",
    "published": "2026-03-31T19:18:35.796Z",
    "modified": "2026-04-01T13:43:21.491Z",
    "type": "cve",
    "title": "lodash vulnerable to Prototype Pollution via array path bypass in `_.unset` and `_.omit`",
    "source": "openjs",
    "references": "https://github.com/lodash/lodash/security/advisories/GHSA-xxjr-mmjv-4gpg",
    "id": "CVE-2026-2950",
    "bulletinFamily": "",
    "cwe": [
        "CWE-1321"
    ],
    "cvelist": null,
    "sourceData": "lodash lodash 4.17.23\nlodash lodash-es 4.17.23\nlodash lodash-amd 4.17.23\nlodash lodash.unset 4.0.0",
    "sourceHref": "",
    "cvss": {
        "score": 6.5,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
        "version": "3.1"
    },
    "cvss2": [],
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        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
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        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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            "baseScore": 0,
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "lodash",
    "version": "4.17.23",
    "vendor": "lodash",
    "ai_description": "",
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    "ai_score": 0
}