{"id":"CVE-2026-9540","state":"PUBLISHED","title":"vllm-project vllm OpenAI-compatible Serving Path denial of service","description":"A vulnerability was identified in vllm-project vllm 0.19.0. This issue affects some unknown processing of the component OpenAI-compatible Serving Path. Such manipulation leads to denial of service. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The pull request to fix this issue awaits acceptance.","publishedAt":"2026-05-26T10:30:12.648Z","updatedAt":"2026-05-26T13:47:57.215Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"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/E:P","source":"VulDB"},"assigner":"VulDB","products":["vllm-project vllm"],"affected":[{"vendor":"vllm-project","product":"vllm","versions":[{"version":"0.19.0","status":"affected"}],"cpes":["cpe:2.3:a:vllm-project:vllm:*:*:*:*:*:*:*:*"],"modules":["OpenAI-compatible Serving Path"]}],"references":["https://vuldb.com/vuln/365601","https://vuldb.com/vuln/365601/cti","https://vuldb.com/submit/814645","https://github.com/vllm-project/vllm/issues/37343","https://github.com/vllm-project/vllm/pull/37594","https://ingero.io/debugging-vllm-latency-minimax-ollama-mcp/","https://github.com/vllm-project/vllm/"],"weaknesses":["CWE-404"],"ingestedAt":"2026-10-29T20:13:52.441Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/9xxx/CVE-2026-9540.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-9540","state":"PUBLISHED","datePublished":"2026-05-26T10:30:12.648Z","dateUpdated":"2026-05-26T13:47:57.215Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-05-26T05:44:55.913Z"},"containers":{"cna":{"title":"vllm-project vllm OpenAI-compatible Serving Path denial of service","descriptions":[{"lang":"en","value":"A vulnerability was identified in vllm-project vllm 0.19.0. This issue affects some unknown processing of the component OpenAI-compatible Serving Path. Such manipulation leads to denial of service. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The pull request to fix this issue awaits acceptance."}],"affected":[{"vendor":"vllm-project","product":"vllm","versions":[{"version":"0.19.0","status":"affected"}],"cpes":["cpe:2.3:a:vllm-project:vllm:*:*:*:*:*:*:*:*"],"modules":["OpenAI-compatible Serving Path"]}],"references":[{"url":"https://vuldb.com/vuln/365601","name":"VDB-365601 | vllm-project vllm OpenAI-compatible Serving Path denial of service","tags":["vdb-entry"]},{"url":"https://vuldb.com/vuln/365601/cti","name":"VDB-365601 | CTI Indicators (IOB, IOC, TTP)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/submit/814645","name":"Submit #814645 | vllm-project vllm 0.19.0 Denial of Service","tags":["third-party-advisory"]},{"url":"https://github.com/vllm-project/vllm/issues/37343","tags":["exploit","issue-tracking"]},{"url":"https://github.com/vllm-project/vllm/pull/37594","tags":["issue-tracking","patch"]},{"url":"https://ingero.io/debugging-vllm-latency-minimax-ollama-mcp/","tags":["related"]},{"url":"https://github.com/vllm-project/vllm/","tags":["product"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":6.9,"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/E:P","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":5.3,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","baseSeverity":"MEDIUM"}},{"cvssV3_0":{"version":"3.0","baseScore":5.3,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","baseSeverity":"MEDIUM"}},{"cvssV2_0":{"version":"2.0","baseScore":5,"vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:ND/RC:UR"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-404","type":"CWE","lang":"en","description":"Denial of Service"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-05-26T10:30:12.648Z"},"timeline":[{"time":"2026-05-26T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-05-26T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-05-26T07:50:13.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"Zyz3366 (VulDB User)","type":"reporter"},{"lang":"en","value":"VulDB CNA Team","type":"coordinator"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-26T13:47:49.051201Z","id":"CVE-2026-9540","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-26T13:47:57.215Z"}}]}}}