vllm – Regular Expression Denial of Service in Multiple Components_CVE-2025-71379

{
    "lastseen": "",
    "description": "vLLM versions >= 0.6.3 and < 0.9.0 contain multiple regular expression denial of service (ReDoS) vulnerabilities. Several regex patterns \u2014 in vllm/lora/utils.py, the phi4mini tool parser, and the OpenAI-compatible serving chat endpoint \u2014 are susceptible to catastrophic backtracking. An attacker submitting crafted input with nested or repeated structures can trigger severe CPU consumption and performance degradation, resulting in denial of service.",
    "published": "2026-06-20T18:27:09.485Z",
    "modified": "2026-06-20T18:27:09.485Z",
    "type": "cve",
    "title": "vllm - Regular Expression Denial of Service in Multiple Components",
    "source": "VulnCheck",
    "references": "https://github.com/vllm-project/vllm/security/advisories/GHSA-j828-28rj-hfhp\nhttps://www.vulncheck.com/advisories/vllm-regular-expression-denial-of-service-in-multiple-components",
    "id": "CVE-2025-71379",
    "bulletinFamily": "",
    "cwe": [
        "CWE-1333"
    ],
    "cvelist": null,
    "sourceData": "vllm vllm 0.6.3",
    "sourceHref": "",
    "cvss": {
        "score": 5.3,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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": "vllm",
    "version": "0.6.3",
    "vendor": "vllm",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}