{"id":"CVE-2026-116174","title":"vLLM 0.22.0 before 0.24.0 Denial of Service via Rust gRPC Generate","summary":"vLLM from 0.22.0 before 0.24.0 contains an improper input validation vulnerability in the Rust gRPC Generate and GenerateStream service that forwards unchecked prompt token IDs to EngineCore. Attackers can submit requests with out-of-voc…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-20","CWE-1285"],"vendor":"vllm-project","product":"vllm","affected":["vllm >= 0.22.0 < 0.24.0"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-29T16:14:28.643128Z"},"published":"2026-10-25","updated":"2026-10-29","sourceUpdated":"2026-10-29T16:14:41.402Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116174","references":[{"url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-w2v2-5662-8v5q","label":"GitHub Security Advisory (GHSA-w2v2-5662-8v5q)"},{"url":"https://www.vulncheck.com/advisories/vllm-0.22.0-before-0.24.0-denial-of-service-via-rust-grpc-generate","label":"VulnCheck Advisory: vLLM 0.22.0 before 0.24.0 Denial of Service via Rust gRPC Generate"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-116174.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-116174"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2560391"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-116174"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116174"}],"tags":["cve.org","csaf","vex","red-hat"],"epss":0.00277,"epssPercentile":0.20212,"ingestedAt":"2026-10-25T22:08:29.947Z","slug":"CVE-2026-116174","body":"## Overview\n\nvLLM from 0.22.0 before 0.24.0 contains an improper input validation vulnerability in the Rust gRPC Generate and GenerateStream service that forwards unchecked prompt token IDs to EngineCore. Attackers can submit requests with out-of-vocabulary prompt.token_ids values to trigger a fatal embedding lookup failure that terminates EngineCore and leaves the server unhealthy.\n\n## Affected\n\n- `vllm >= 0.22.0 < 0.24.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat AI Inference Server, Red Hat Enterprise Linux AI (RHEL AI) 3, Red Hat OpenShift AI (RHOAI) · no fix planned: Red Hat AI Inference Server, Red Hat Enterprise Linux AI (RHEL AI) 3, Red Hat OpenShift AI (RHOAI) · updated 2026-10-25 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-116174.json)","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":32.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}