{"id":"CVE-2026-93592","title":"vLLM versions before 0.28.0 fail to validate the lower bound of token IDs in the /v1/embeddings and /pooling endpoints, allowing unauthenticated attackers to crash the engine by submitting negative token IDs","summary":"vLLM versions before 0.28.0 fail to validate the lower bound of token IDs in the /v1/embeddings and /pooling endpoints, allowing unauthenticated attackers to crash the engine by submitting negative token IDs. A single request with a nega…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-129","CWE-617"],"vendor":"vllm-project","product":"vllm","affected":["vllm < 0.28.0"],"published":"2026-09-18","updated":"2026-09-22","sourceUpdated":"2026-09-22T20:25:55.870","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93592","references":[{"url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-25q3-v2hm-8vpf","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/vllm-before-0.28.0-denial-of-service-via-negative-token-id","label":"disclosure@vulncheck.com"},{"url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-25q3-v2hm-8vpf","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93592.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-93592"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2538478"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93592"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93592"}],"tags":["nvd","cve.org","exploit-available","csaf","vex","red-hat"],"epss":0.00377,"epssPercentile":0.31629,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-18T18:09:16.556315Z"},"ingestedAt":"2026-09-18T13:41:41.665Z","slug":"CVE-2026-93592","body":"## Overview\n\nvLLM versions before 0.28.0 fail to validate the lower bound of token IDs in the /v1/embeddings and /pooling endpoints, allowing unauthenticated attackers to crash the engine by submitting negative token IDs. A single request with a negative token ID triggers a CUDA device-side assertion that poisons the GPU context, causing all subsequent requests to fail until the process restarts.\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** · Important · 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 2026-09-22 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93592.json)","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":207427,"id":"CVE-2026-93592","ts":1789757349948,"field":"exploit_available","old":"false","new":"true"}]}