{"id":82594,"date":"2026-07-27T20:46:42","date_gmt":"2026-07-27T17:16:42","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-66731-facil-io-0-7-5-0-7-6-http-1-1-chunked-transfer-encoding-parser-crash-dos\/"},"modified":"2026-07-27T20:46:42","modified_gmt":"2026-07-27T17:16:42","slug":"cve-2026-66731-facil-io-0-7-5-0-7-6-http-1-1-chunked-transfer-encoding-parser-crash-dos","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-66731-facil-io-0-7-5-0-7-6-http-1-1-chunked-transfer-encoding-parser-crash-dos\/","title":{"rendered":"CVE-2026-66731 &#8211; facil.io 0.7.5 &#8211; 0.7.6 HTTP\/1.1 Chunked Transfer Encoding Parser Crash DoS"},"content":{"rendered":"<p>CVE ID :CVE-2026-66731<\/p>\n<p>  Published : July 27, 2026, 5:16 p.m. | 39\u00a0minutes ago<\/p>\n<p>  Description :facil.io 0.7.5 through 0.7.6 contains a denial-of-service vulnerability in the HTTP\/1.1 chunked transfer encoding parser that allows unauthenticated remote attackers to crash the server by sending a negative chunk size value. Attackers can send a single POST request with a Transfer-Encoding: chunked header containing a leading minus sign in the chunk size field, causing the parser in http1_parser.h to compute a large positive integer from the negated value, corrupting internal state and moving the read pointer into unmapped memory resulting in a fault.<\/p>\n<p>  Severity: 8.7 | HIGH<\/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-2026-66731 Published : July 27, 2026, 5:16 p.m. | 39\u00a0minutes ago Description :facil.io 0.7.5 through 0.7.6 contains a denial-of-service vulnerability in the HTTP\/1.1 chunked transfer encoding parser that allows unauthenticated remote attackers to crash the server by sending a negative chunk size value. Attackers can send a single POST request with a Transfer-Encoding: &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-82594","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82594","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=82594"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82594\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=82594"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=82594"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=82594"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}