{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-126397","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-11-10T21:30:16.910Z","datePublished":"2026-11-13T09:35:50.274Z","dateUpdated":"2026-11-13T09:35:50.274Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-11-13T09:35:50.274Z"},"datePublic":"2026-10-27T00:00:00.000Z","title":"vLLM 0.10.1 before 0.31.0 Cohere2 Vision DoS via max_patches","descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Uncontrolled Resource Consumption","cweId":"CWE-400","type":"CWE"}]}],"affected":[{"vendor":"vllm-project","product":"vllm","defaultStatus":"unaffected","packageURL":"pkg:pypi/vllm","versions":[{"version":"0.10.1","status":"affected","versionType":"semver","lessThan":"0.31.0"},{"version":"0.31.0","status":"unaffected","versionType":"semver"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*","versionStartIncluding":"0.10.1","versionEndExcluding":"0.31.0"}]}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS"},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"format":"CVSS"}],"references":[{"url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-9g3c-x747-c6wr","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-9g3c-x747-c6wr)"},{"url":"https://github.com/vllm-project/vllm/commit/f6326f53bda46898a331c2d24500332c285d9a2b","tags":["patch"],"name":"Patch Commit"},{"name":"VulnCheck Advisory: vLLM 0.10.1 before 0.31.0 Cohere2 Vision DoS via max_patches","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/vllm-0.10.1-before-0.31.0-cohere2-vision-dos-via-max-patches"}],"credits":[{"lang":"en","value":"0xbbdd","type":"reporter"},{"lang":"en","value":"jperezdealgaba","type":"coordinator"}],"x_generator":{"engine":"vulncheck-endgame"}}}}