LiteLLM: Authentication Bypass via Host Header Injection_CVE-2026-49468

{
    "lastseen": "",
    "description": "LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.84.0,  This vulnerability is fixed in 1.84.0.",
    "published": "2026-06-22T20:37:14.494Z",
    "modified": "2026-06-22T20:37:14.494Z",
    "type": "cve",
    "title": "LiteLLM: Authentication Bypass via Host Header Injection",
    "source": "GitHub_M",
    "references": "https://github.com/BerriAI/litellm/security/advisories/GHSA-4xpc-pv4p-pm3w\nhttps://github.com/BerriAI/litellm/releases/tag/v1.84.0",
    "id": "CVE-2026-49468",
    "bulletinFamily": "",
    "cwe": [
        "CWE-290"
    ],
    "cvelist": null,
    "sourceData": "BerriAI litellm < 1.84.0",
    "sourceHref": "",
    "cvss": {
        "score": 9.5,
        "severity": "CRITICAL",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
        "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": "litellm",
    "version": "< 1.84.0",
    "vendor": "BerriAI",
    "ai_description": "Authentication Bypass via Host Header Injection in LiteLLM proxy server",
    "ai_severity": "Critical",
    "ai_vendor": "BerriAI",
    "ai_product": "LiteLLM",
    "ai_version": "< 1.84.0",
    "ai_score": 9.5
}