CVE-2025-71379 (GCVE-0-2025-71379)

Vulnerability from cvelistv5 – Published: 2026-06-20 18:27 – Updated: 2026-06-20 18:27
VLAI
Title
vllm - Regular Expression Denial of Service in Multiple Components
Summary
vLLM versions >= 0.6.3 and < 0.9.0 contain multiple regular expression denial of service (ReDoS) vulnerabilities. Several regex patterns — in vllm/lora/utils.py, the phi4mini tool parser, and the OpenAI-compatible serving chat endpoint — 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.
Severity
5.3 (Medium)
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
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
Vendor Product Version
vllm vllm Affected: 0.6.3 , < 0.9.0 (semver)
Unaffected: 0.9.0 (semver)
Create a notification for this product.
Date Public
2025-05-28 00:00
Credits
kexinoh russellb mgoin
Show details on NVD website
To clipboard 

{
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          "packageURL": "pkg:pypi/vllm",
          "product": "vllm",
          "vendor": "vllm",
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              "versionType": "semver"
            },
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              "status": "unaffected",
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      "datePublic": "2025-05-28T00:00:00.000Z",
      "descriptions": [
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        }
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            "privilegesRequired": "LOW",
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            "integrityImpact": "NONE",
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            "scope": "UNCHANGED",
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            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
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      "problemTypes": [
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      "providerMetadata": {
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        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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          "tags": [
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        },
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          "tags": [
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      "title": "vllm - Regular Expression Denial of Service in Multiple Components",
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  "cveMetadata": {
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    "dateReserved": "2026-06-20T13:11:44.728Z",
    "dateUpdated": "2026-06-20T18:27:09.485Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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