{"id":"CVE-2026-126397","aliases":["GHSA-9g3c-x747-c6wr"],"url":"https://o3.security/vulnerability/CVE-2026-126397","summary":"vLLM 0.10.1 before 0.31.0 Cohere2 Vision DoS via max_patches","details":"vLLM from 0.10.1 before 0.31.0 forwards a request-controlled mm_processor_kwargs.max_patches value to the Hugging Face processor for Cohere2 Vision models without a server-side upper bound, causing quadratic CPU work during multimodal preprocessing. Remote clients can send small image chat-completion requests with large, varying max_patches values to bypass the LRU cache, exhaust preprocessing workers, and deny service to other clients.","published":"2026-11-13T09:35:50.274Z","modified":"2026-11-14T02:47:28.176064902Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/vllm-project/vllm/commit/f6326f53bda46898a331c2d24500332c285d9a2b","label":"vllm-project/vllm@f6326f5"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126397.json"},{"type":"FIX","url":"https://github.com/vllm-project/vllm/commit/f6326f53bda46898a331c2d24500332c285d9a2b"},{"type":"ADVISORY","url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-9g3c-x747-c6wr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126397"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/vllm-0.10.1-before-0.31.0-cohere2-vision-dos-via-max-patches"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-11-14T02:47:28.176064902Z"}}