CVE-2026-126398

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Source

https://cve.org/CVERecord?id=CVE-2026-126398

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-126398.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-126398

Aliases

GHSA-5q78-j82c-2vr2

Published

2026-11-13T09:35:49Z

Modified

2026-11-14T02:45:16Z

Severity

8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

vLLM 0.28.0 before 0.30.0 Denial of Service via Prompt Embeds on XD-RoPE Models

Details

vLLM from 0.28.0 before 0.30.0 contains a reachable assertion vulnerability in GPUModelRunner._init_xdrope_positions that allows remote attackers to crash the engine by submitting embeddings-only requests. Attackers can send a /v1/completions request containing only prompt_embeds to XD-RoPE models with --enable-prompt-embeds, terminating the EngineCore and API server for all clients.

Database specific

{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-617"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126398.json"
}

References

Affected packages

Git / github.com/vllm-project/vllm

Affected ranges

Type

GIT

Repo

https://github.com/vllm-project/vllm

Events

Introduced

2cf0a6915ce544dc493a0990f2ea38d81601128a

Fixed

ced6857afa0ea7b2e3f0846a62e1394e90f15607

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0.28.0"
                },
                {
                    "fixed": "0.30.0"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        }
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-126398.json"