{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-126398","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-11-10T21:30:16.910Z","datePublished":"2026-11-13T09:35:49.601Z","dateUpdated":"2026-11-13T09:35:49.601Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-11-13T09:35:49.601Z"},"datePublic":"2026-10-27T00:00:00.000Z","title":"vLLM 0.28.0 before 0.30.0 Denial of Service via Prompt Embeds on XD-RoPE Models","descriptions":[{"lang":"en","value":"vLLM from 0.28.0 before 0.30.0 contains a reachable assertion vulnerability in GPUModelRunner._init_xdrope_positions that allows remote attackers to crash the engine by submitting embeddings-only requests. Attackers can send a /v1/completions request containing only prompt_embeds to XD-RoPE models with --enable-prompt-embeds, terminating the EngineCore and API server for all clients."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Reachable Assertion","cweId":"CWE-617","type":"CWE"}]}],"affected":[{"vendor":"vllm-project","product":"vllm","defaultStatus":"unaffected","packageURL":"pkg:pypi/vllm","versions":[{"version":"0.28.0","status":"affected","versionType":"semver","lessThan":"0.30.0"},{"version":"0.30.0","status":"unaffected","versionType":"semver"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*","versionStartIncluding":"0.28.0","versionEndExcluding":"0.30.0"}]}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":5.9,"baseSeverity":"MEDIUM"}}],"references":[{"url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-5q78-j82c-2vr2","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-5q78-j82c-2vr2)"},{"name":"VulnCheck Advisory: vLLM 0.28.0 before 0.30.0 Denial of Service via Prompt Embeds on XD-RoPE Models","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/vllm-0.28.0-before-0.30.0-denial-of-service-via-prompt-embeds-on-xd-rope-models"}],"credits":[{"lang":"en","value":"wildoranges","type":"reporter"},{"lang":"en","value":"jperezdealgaba","type":"coordinator"}],"x_generator":{"engine":"vulncheck-endgame"}}}}