{"data":{"id":"a1e491e5-d22b-4186-98f8-251f640bd11b","title":"CVE-2026-116180: vLLM from 0.8.5 before 0.31.0 has a denial of service flaw. LogprobsTensors.empty_cpu() in vllm/v1/outputs.py allocates…","summary":"vLLM from 0.8.5 before 0.31.0 contains a denial of service flaw. LogprobsTensors.empty_cpu() in vllm/v1/outputs.py allocates an uninitialized int32 tensor, and the V1 model runner leaves prompt positions reported as computed by a KV connector unwritten. A client sharing the engine can send prompt_logprobs (or echo with logprobs) against a connector-cached prefix, causing tokenizer decode to raise OverflowError, which crashes EngineCore and drops all co-tenant requests.","solution":"N/A -- no mitigation discussed in source.","labels":["security"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-116180","publishedAt":"2026-10-25T14:16:57.760Z","cveId":"CVE-2026-116180","cweIds":["CWE-908"],"cvssScore":"7.7","cvssSeverity":"high","severity":"high","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 denial of service through prompt_logprobs on cached prefixes","headlinePromptVersion":"h1","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","attackVector":"network","attackComplexity":"low","privilegesRequired":"low","userInteraction":"none","exploitMaturity":"unknown","epssScore":0,"epssCheckedAt":"2026-10-25T18:08:33.116Z","kevDateAdded":null,"advisoryAliases":["GHSA-v8gv-gxpf-cg62"],"affectedPackagesSource":null,"affectedPackagesCheckedAt":"2026-10-25T18:08:36.648Z","patchAvailable":null,"disclosureDate":"2026-10-25T14:16:57.760Z","capecIds":null,"crossRefCount":0,"attackSophistication":"trivial","impactType":["availability"],"aiComponentTargeted":"inference","llmSpecific":true,"classifierConfidence":0.95,"researchCategory":null,"atlasIds":null}}