{"schema":"threatline.record/2","record":{"id":"CVE-2026-115918","aliases":["GHSA-x567-49g5-p4cf"],"summary":"vLLM: Responses API bypasses trust_request_chat_template for chat_template_kwargs","details":"vLLM is an inference and serving engine for large language models. From 0.16.0 until 0.32.0, the /v1/responses endpoint allows an authenticated caller to place an attacker-controlled template in chat_template_kwargs[chat_template] when no server template is configured. ChatParams.get_apply_chat_template_kwargs() preserves that value without enforcing trust_request_chat_template, so the request can bypass the intended trust policy and cause CPU or memory exhaustion through Jinja rendering. This issue is fixed in version 0.32.0.","categories":["Unclassified"],"product":"vllm","vendor":"vllm-project","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-115918","source_modified_at":"2026-10-26T17:21:49.719Z","fetched_at":"2026-10-26T19:10:57.178988Z","product":"vllm","vendor":"vllm-project","versions":[{"version":">= 0.16.0, < 0.32.0","status":"affected"}],"defaultStatus":null}],"fixed_versions":[],"cvss":6.5,"severity":"Medium","kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-26T17:21:49.719Z","modified_at":"2026-10-26T17:21:49.719Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-115918","fetched_at":"2026-10-26T19:10:57.178988Z","source_modified_at":"2026-10-26T17:21:49.719Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-x567-49g5-p4cf","tags":["x_refsource_CONFIRM"]},{"source":"CVE List","url":"https://github.com/vllm-project/vllm/pull/50300","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/vllm-project/vllm/commit/cff08b461e086523cee8bba5bd3c66d302625134","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/vllm-project/vllm/releases/tag/v0.32.0","tags":["x_refsource_MISC"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-26T17:21:49.719Z","content_hash":"42ef90041fa7cf862a2354536b1bd8bd124d0de717f8e29469122f73739e5faf"}}