{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-94625", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-09-21T21:42:27.917Z", "datePublished": "2026-09-21T22:04:14.206Z", "dateUpdated": "2026-09-21T22:04:14.206Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-09-21T22:04:14.206Z" }, "datePublic": "2026-08-06T00:00:00.000Z", "title": "vLLM through 0.29.0 Resource Exhaustion via Ownerless Mooncake Transfer Placeholders", "descriptions": [ { "lang": "en", "value": "vLLM through 0.29.0 contains a resource exhaustion vulnerability in MooncakeConnector where rejected prefill requests create ownerless transfer placeholders that are never reclaimed. Attackers can send rejected requests to exhaust sender task pools, causing valid requests to be delayed by up to 480 seconds while health checks continue returning success." } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Missing Release of Resource after Effective Lifetime", "cweId": "CWE-772", "type": "CWE" } ] } ], "affected": [ { "vendor": "vllm-project", "product": "vllm", "defaultStatus": "unaffected", "packageURL": "pkg:pypi/vllm", "versions": [ { "version": "0", "lessThanOrEqual": "0.29.0", "status": "affected", "versionType": "semver" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*", "versionEndIncluding": "0.29.0" } ] } ] } ], "metrics": [ { "format": "CVSS", "cvssV4_0": { "version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM" } }, { "format": "CVSS", "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM" } } ], "references": [ { "url": "https://github.com/vllm-project/vllm/pull/51236", "tags": [ "issue-tracking", "patch" ], "name": "Pull Request #51236" }, { "url": "https://github.com/vllm-project/vllm/blob/v0.29.0/vllm/distributed/kv_transfer/kv_connector/v1/mooncake/mooncake_connector.py#L1234-L1242", "tags": [ "technical-description" ] }, { "url": "https://github.com/vllm-project/vllm", "tags": [ "product" ] }, { "name": "VulnCheck Advisory: vLLM through 0.29.0 Resource Exhaustion via Ownerless Mooncake Transfer Placeholders", "tags": [ "third-party-advisory" ], "url": "https://www.vulncheck.com/advisories/vllm-through-0.29.0-resource-exhaustion-via-ownerless-mooncake-transfer-placeholders" } ], "credits": [ { "lang": "en", "value": "Mingkai Yu", "type": "finder" }, { "lang": "en", "value": "Jiapeng Li", "type": "finder" }, { "lang": "en", "value": "Jiajia Liu", "type": "finder" } ], "x_generator": { "engine": "vulncheck-endgame" } } } }