{"data":{"id":"e4b54054-b769-4545-b036-7abc5fef45c4","title":"CVE-2026-126398: vLLM from 0.28.0 before 0.30.0 contains a reachable assertion vulnerability in GPUModelRunner._init_xdrope_positions…","summary":"vLLM versions from 0.28.0 before 0.30.0 contain a reachable assertion in GPUModelRunner._init_xdrope_positions. A remote attacker can send a /v1/completions request containing only prompt_embeds to XD-RoPE models run with --enable-prompt-embeds, which terminates the EngineCore and API server for all clients.","solution":"Fixed in 0.30.0 (upgrade vLLM to 0.30.0 or later).","labels":["security"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-126398","publishedAt":"2026-11-13T10:17:44.093Z","cveId":"CVE-2026-126398","cweIds":["CWE-617"],"cvssScore":"5.9","cvssSeverity":"medium","severity":"medium","attackType":["denial_of_service"],"issueType":"vulnerability","affectedPackages":null,"affectedPackageNames":null,"affectedPackageRefs":null,"affectedVendors":[],"affectedVendorsRaw":["vLLM"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":"vLLM reachable assertion crash in GPUModelRunner via embeddings-only requests","headlinePromptVersion":"h1","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"network","attackComplexity":"high","privilegesRequired":"none","userInteraction":"none","exploitMaturity":"unknown","epssScore":0.00492,"epssCheckedAt":"2026-11-13T18:11:31.381Z","kevDateAdded":null,"advisoryAliases":["GHSA-pjrq-r86m-9r53"],"affectedPackagesSource":null,"affectedPackagesCheckedAt":"2026-11-13T18:11:34.702Z","patchAvailable":null,"disclosureDate":"2026-11-13T10:17:44.093Z","fixReleasedAt":null,"daysToFix":null,"fixCheckedAt":null,"capecIds":null,"crossRefCount":0,"attackSophistication":"trivial","impactType":["availability"],"aiComponentTargeted":"inference","llmSpecific":true,"classifierConfidence":0.95,"researchCategory":null,"atlasIds":null,"fixes":[]}}