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    CVE-2026-55514 (GCVE-0-2026-55514)

    Vulnerability from cvelistv5 – Published: 2026-07-06 20:07 – Updated: 2026-07-06 20:46
    VLAI
    Title
    vLLM denial of service via prompt embeds on M-RoPE models
    Summary
    vLLM is a library for LLM inference and serving. From 0.12.0 to before 0.24.0, sending a pure prompt embeds payload in a /v1/completions request with a model using M-RoPE causes EngineCore to fail an assertion and fatally crash, shutting down the entire server application. Any remote user who is authorized to make a /v1/completions request can make such a request and induce a crash. This issue is fixed in version 0.24.0.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    Impacted products
    Vendor Product Version
    vllm-project vllm Affected: >= 0.12.0, < 0.24.0
    Create a notification for this product.
    Show details on NVD website

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                    "id": "CVE-2026-55514",
                    "options": [
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                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-07-06T20:45:29.132412Z",
                    "version": "2.0.3"
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              "dateUpdated": "2026-07-06T20:46:52.405Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
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        ],
        "cna": {
          "affected": [
            {
              "product": "vllm",
              "vendor": "vllm-project",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003e= 0.12.0, \u003c 0.24.0"
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            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "NETWORK",
                "baseScore": 7.1,
                "baseSeverity": "HIGH",
                "privilegesRequired": "LOW",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
                "version": "4.0",
                "vulnAvailabilityImpact": "HIGH",
                "vulnConfidentialityImpact": "NONE",
                "vulnIntegrityImpact": "NONE"
              }
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          "providerMetadata": {
            "dateUpdated": "2026-07-06T20:07:40.405Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/vllm-project/vllm/security/advisories/GHSA-33cg-gxv8-3p8g",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/vllm-project/vllm/security/advisories/GHSA-33cg-gxv8-3p8g"
            },
            {
              "name": "https://github.com/vllm-project/vllm/pull/45252",
              "tags": [
                "x_refsource_MISC"
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              "url": "https://github.com/vllm-project/vllm/pull/45252"
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              "name": "https://github.com/vllm-project/vllm/commit/470229c37efaf69c86e8bc97482b0b1ff7551c65",
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              "url": "https://github.com/vllm-project/vllm/releases/tag/v0.24.0"
            }
          ],
          "source": {
            "advisory": "GHSA-33cg-gxv8-3p8g",
            "discovery": "UNKNOWN"
          },
          "title": "vLLM denial of service via prompt embeds on M-RoPE models"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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        "cveId": "CVE-2026-55514",
        "datePublished": "2026-07-06T20:07:40.405Z",
        "dateReserved": "2026-06-16T22:44:22.284Z",
        "dateUpdated": "2026-07-06T20:46:52.405Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }

    PYSEC-2026-2303

    Vulnerability from pysec - Published: 2026-07-06 21:16 - Updated: 2026-07-13 05:52
    VLAI
    Details

    vLLM is a library for LLM inference and serving. From 0.12.0 to before 0.24.0, sending a pure prompt embeds payload in a /v1/completions request with a model using M-RoPE causes EngineCore to fail an assertion and fatally crash, shutting down the entire server application. Any remote user who is authorized to make a /v1/completions request can make such a request and induce a crash. This issue is fixed in version 0.24.0.

    Impacted products
    Name purl
    vllm pkg:pypi/vllm

    {
      "affected": [
        {
          "ecosystem_specific": {},
          "package": {
            "ecosystem": "PyPI",
            "name": "vllm",
            "purl": "pkg:pypi/vllm"
          },
          "ranges": [
            {
              "events": [
                {
                  "introduced": "0.12.0"
                },
                {
                  "fixed": "0.24.0"
                }
              ],
              "type": "ECOSYSTEM"
            }
          ],
          "versions": [
            "0.12.0",
            "0.13.0",
            "0.14.0",
            "0.14.1",
            "0.15.0",
            "0.15.1",
            "0.16.0",
            "0.17.0",
            "0.17.1",
            "0.18.0",
            "0.18.1",
            "0.19.0",
            "0.19.1",
            "0.20.0",
            "0.20.1",
            "0.20.2",
            "0.21.0",
            "0.22.0",
            "0.22.1",
            "0.23.0"
          ]
        }
      ],
      "aliases": [
        "CVE-2026-55514",
        "GHSA-33cg-gxv8-3p8g"
      ],
      "details": "vLLM is a library for LLM inference and serving. From 0.12.0 to before 0.24.0, sending a pure prompt embeds payload in a /v1/completions request with a model using M-RoPE causes EngineCore to fail an assertion and fatally crash, shutting down the entire server application. Any remote user who is authorized to make a /v1/completions request can make such a request and induce a crash. This issue is fixed in version 0.24.0.",
      "id": "PYSEC-2026-2303",
      "modified": "2026-07-13T05:52:25.622117Z",
      "published": "2026-07-06T21:16:57.207Z",
      "references": [
        {
          "type": "ADVISORY",
          "url": "https://github.com/vllm-project/vllm/releases/tag/v0.24.0"
        },
        {
          "type": "ADVISORY",
          "url": "https://github.com/vllm-project/vllm/security/advisories/GHSA-33cg-gxv8-3p8g"
        },
        {
          "type": "FIX",
          "url": "https://github.com/vllm-project/vllm/commit/470229c37efaf69c86e8bc97482b0b1ff7551c65"
        },
        {
          "type": "FIX",
          "url": "https://github.com/vllm-project/vllm/pull/45252"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "type": "CVSS_V3"
        }
      ]
    }