{"id":"CVE-2025-48956","state":"PUBLISHED","title":"vLLM API endpoints vulnerable to Denial of Service Attacks","description":"vLLM is an inference and serving engine for large language models (LLMs). From 0.1.0 to before 0.10.1.1, a Denial of Service (DoS) vulnerability can be triggered by sending a single HTTP GET request with an extremely large header to an HTTP endpoint. This results in server memory exhaustion, potentially leading to a crash or unresponsiveness. The attack does not require authentication, making it exploitable by any remote user. This vulnerability is fixed in 0.10.1.1.","publishedAt":"2025-08-21T14:41:03.889Z","updatedAt":"2025-08-21T15:02:09.023Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["vllm-project vllm"],"affected":[{"vendor":"vllm-project","product":"vllm","versions":[{"version":">= 0.1.0, < 0.10.1.1","status":"affected"}]}],"references":["https://github.com/vllm-project/vllm/security/advisories/GHSA-rxc4-3w6r-4v47","https://github.com/vllm-project/vllm/pull/23267","https://github.com/vllm-project/vllm/commit/d8b736f913a59117803d6701521d2e4861701944"],"weaknesses":["CWE-400"],"ingestedAt":"2026-10-29T20:09:23.771Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/48xxx/CVE-2025-48956.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-48956","state":"PUBLISHED","datePublished":"2025-08-21T14:41:03.889Z","dateUpdated":"2025-08-21T15:02:09.023Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2025-05-28T18:49:07.585Z"},"containers":{"cna":{"title":"vLLM API endpoints vulnerable to Denial of Service Attacks","descriptions":[{"lang":"en","value":"vLLM is an inference and serving engine for large language models (LLMs). From 0.1.0 to before 0.10.1.1, a Denial of Service (DoS) vulnerability can be triggered by sending a single HTTP GET request with an extremely large header to an HTTP endpoint. This results in server memory exhaustion, potentially leading to a crash or unresponsiveness. The attack does not require authentication, making it exploitable by any remote user. This vulnerability is fixed in 0.10.1.1."}],"affected":[{"vendor":"vllm-project","product":"vllm","versions":[{"version":">= 0.1.0, < 0.10.1.1","status":"affected"}]}],"references":[{"url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-rxc4-3w6r-4v47","name":"https://github.com/vllm-project/vllm/security/advisories/GHSA-rxc4-3w6r-4v47","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/vllm-project/vllm/pull/23267","name":"https://github.com/vllm-project/vllm/pull/23267","tags":["x_refsource_MISC"]},{"url":"https://github.com/vllm-project/vllm/commit/d8b736f913a59117803d6701521d2e4861701944","name":"https://github.com/vllm-project/vllm/commit/d8b736f913a59117803d6701521d2e4861701944","tags":["x_refsource_MISC"]}],"metrics":[{"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2025-08-21T14:41:03.889Z"},"source":{"advisory":"GHSA-rxc4-3w6r-4v47","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-08-21T15:01:51.159829Z","id":"CVE-2025-48956","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-08-21T15:02:09.023Z"}}]}}}