{"id":74050,"date":"2025-11-21T05:45:43","date_gmt":"2025-11-21T02:15:43","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2025-62426-vllm-vulnerable-to-dos-via-large-chat-completion-or-tokenization-requests-with-specially-crafted-chat_template_kwargs\/"},"modified":"2025-11-21T05:45:43","modified_gmt":"2025-11-21T02:15:43","slug":"cve-2025-62426-vllm-vulnerable-to-dos-via-large-chat-completion-or-tokenization-requests-with-specially-crafted-chat_template_kwargs","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2025-62426-vllm-vulnerable-to-dos-via-large-chat-completion-or-tokenization-requests-with-specially-crafted-chat_template_kwargs\/","title":{"rendered":"CVE-2025-62426 &#8211; vLLM vulnerable to DoS via large Chat Completion or Tokenization requests with specially crafted `chat_template_kwargs`"},"content":{"rendered":"<p>CVE ID : CVE-2025-62426<\/p>\n<p>Published :  Nov. 21, 2025, 2:15 a.m. | 59\u00a0minutes ago<\/p>\n<p>Description : vLLM is an inference and serving engine for large language models (LLMs). From version 0.5.5 to before 0.11.1, the \/v1\/chat\/completions and \/tokenize endpoints allow a chat_template_kwargs request parameter that is used in the code before it is properly validated against the chat template. With the right chat_template_kwargs parameters, it is possible to block processing of the API server for long periods of time, delaying all other requests. This issue has been patched in version 0.11.1.<\/p>\n<p>Severity: 6.5 | MEDIUM<\/p>\n<p>Visit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID : CVE-2025-62426 Published : Nov. 21, 2025, 2:15 a.m. | 59\u00a0minutes ago Description : vLLM is an inference and serving engine for large language models (LLMs). From version 0.5.5 to before 0.11.1, the \/v1\/chat\/completions and \/tokenize endpoints allow a chat_template_kwargs request parameter that is used in the code before it is properly validated &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-74050","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/74050","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=74050"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/74050\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=74050"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=74050"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=74050"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}