{"id":"CVE-2026-116180","aliases":[],"cve":{"records":[{"id":"CVE-2026-116180","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-25T12:26:13.487Z","published":"2026-10-25T13:20:19.199Z","modified":"2026-10-26T19:48:35.789Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-25T13:20:19.199Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-26T19:48:35.789Z"}],"references":[{"url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-rhcx-5729-88vg","tags":["vendor-advisory"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/vllm-from-0.8.5-before-0.31.0-cross-tenant-dos-via-uninitialized-logprobstensors","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-908","description":"Use of Uninitialized Resource","source":"VulnCheck"}],"applicability":[{"source":"VulnCheck","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*","versionStartIncluding":"0.8.5","versionEndExcluding":"0.31.0"}]}]}]}],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-26T19:38:04.390533Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"vLLM from 0.8.5 before 0.31.0 Cross-Tenant DoS via Uninitialized LogprobsTensors","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"vLLM from 0.8.5 before 0.31.0 has 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, making tokenizer decode raise OverflowError, which crashes EngineCore and drops all co-tenant requests.","score":8.3,"severity":"high","published":"2026-10-25T13:20:19.199Z","modified":"2026-10-26T19:48:35.789Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"vllm-project","name":"vllm","platforms":[],"versions":[{"version":"0.8.5","status":"affected","lessThan":"0.31.0","versionType":"semver"},{"version":"0.31.0","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:pypi/vllm","packageIdentity":{"ecosystem":"PyPI","name":"vllm"},"cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-116180"}],"remediation":[],"references":["https://github.com/vllm-project/vllm/security/advisories/GHSA-rhcx-5729-88vg","https://www.vulncheck.com/advisories/vllm-from-0.8.5-before-0.31.0-cross-tenant-dos-via-uninitialized-logprobstensors"],"sources":[{"name":"CVE","id":"CVE-2026-116180","modified":"2026-10-26T19:48:35.789Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-116180"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","score":8.3},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","score":7.7}],"sourceAffected":[],"observedAt":"2026-10-29T14:34:54.967Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T13:55:32.867Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":{"text":"vLLM versions 0.8.5 before 0.31.0 have a denial of service weakness due to an uninitialized LogprobsTensors allocation, allowing a client to crash EngineCore. A client can send specific requests to achieve this. The impact is a denial of service.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T08:56:12.856Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-116180"}]}}