{"id":"CVE-2026-90878","summary":"vllm-project vLLM Jinja Template Rendering completions resource consumption","details":"A vulnerability was determined in vllm-project vLLM up to 0.27.1. This affects an unknown part of the file /v1/chat/completions of the component Jinja Template Rendering. This manipulation of the argument chat_template causes resource consumption. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. The pull request to fix this issue awaits acceptance.","modified":"2026-09-17T03:30:19.181370215Z","published":"2026-09-15T04:15:11.051Z","database_specific":{"cna_assigner":"VulDB","cwe_ids":["CWE-400","CWE-404"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90878.json"},"references":[{"type":"WEB","url":"https://github.com/vllm-project/vllm/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90878.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90878"},{"type":"ADVISORY","url":"https://vuldb.com/cve/CVE-2026-90878"},{"type":"ADVISORY","url":"https://vuldb.com/submit/927901"},{"type":"ADVISORY","url":"https://vuldb.com/vuln/403472"},{"type":"REPORT","url":"https://github.com/vllm-project/vllm/issues/52025"},{"type":"REPORT","url":"https://vuldb.com/vuln/403472/cti"},{"type":"FIX","url":"https://github.com/vllm-project/vllm/pull/52163"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/vllm-project/vllm","events":[{"introduced":"4bdc8a788d2e2ce9165d552b3d4d8b72604626bf"},{"last_affected":"6e448d0ea9bf3d88d898b65449ca6dc2aec170ac"}],"database_specific":{"extracted_events":[{"introduced":"0.27.0"},{"last_affected":"0.27.0"},{"introduced":"0.27.1"},{"last_affected":"0.27.1"}],"source":"AFFECTED_FIELD"}}],"versions":["0.27.0","0.27.1","v0.27.1","v0.27.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90878.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P"}]}