{"id":80932,"date":"2026-06-23T01:48:14","date_gmt":"2026-06-22T22:18:14","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-41523-vllm-security-check-bypass-via-assert-statement-in-activation-function-loading-allows-arbitrary-code-execution\/"},"modified":"2026-06-23T01:48:14","modified_gmt":"2026-06-22T22:18:14","slug":"cve-2026-41523-vllm-security-check-bypass-via-assert-statement-in-activation-function-loading-allows-arbitrary-code-execution","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-41523-vllm-security-check-bypass-via-assert-statement-in-activation-function-loading-allows-arbitrary-code-execution\/","title":{"rendered":"CVE-2026-41523 &#8211; vLLM: Security Check Bypass via assert Statement in Activation Function Loading Allows Arbitrary Code Execution"},"content":{"rendered":"<p>CVE ID :CVE-2026-41523<\/p>\n<p>  Published : June 22, 2026, 10:18 p.m. | 1\u00a0hour, 25\u00a0minutes ago<\/p>\n<p>  Description :vLLM is an inference and serving engine for large language models (LLMs). Prior to 0.22.0, an assert-based security check in vLLM&#8217;s activation function loading allows any unauthenticated attacker to achieve arbitrary code execution on the server by publishing a malicious HuggingFace model, when vLLM runs in Python optimized mode (python -O or PYTHONOPTIMIZE=1). This vulnerability is fixed in 0.22.0.<\/p>\n<p>  Severity: 0.0 | NA<\/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-2026-41523 Published : June 22, 2026, 10:18 p.m. | 1\u00a0hour, 25\u00a0minutes ago Description :vLLM is an inference and serving engine for large language models (LLMs). Prior to 0.22.0, an assert-based security check in vLLM&#8217;s activation function loading allows any unauthenticated attacker to achieve arbitrary code execution on the server by publishing a malicious &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-80932","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/80932","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=80932"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/80932\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=80932"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=80932"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=80932"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}