{"id":82461,"date":"2026-07-23T22:47:03","date_gmt":"2026-07-23T19:17:03","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-63765-chatwoot-4-16-0-unauthenticated-activestorage-direct-upload-arbitrary-blob-creation\/"},"modified":"2026-07-23T22:47:03","modified_gmt":"2026-07-23T19:17:03","slug":"cve-2026-63765-chatwoot-4-16-0-unauthenticated-activestorage-direct-upload-arbitrary-blob-creation","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-63765-chatwoot-4-16-0-unauthenticated-activestorage-direct-upload-arbitrary-blob-creation\/","title":{"rendered":"CVE-2026-63765 &#8211; Chatwoot &lt; 4.16.0 Unauthenticated ActiveStorage Direct Upload Arbitrary Blob Creation"},"content":{"rendered":"<p>CVE ID :CVE-2026-63765<\/p>\n<p>  Published : July 23, 2026, 7:17 p.m. | 32\u00a0minutes ago<\/p>\n<p>  Description :Chatwoot before 4.16.0 contains an authentication bypass vulnerability in the direct uploads controller that allows unauthenticated attackers to create arbitrary ActiveStorage blobs in any tenant account. Attackers can exploit missing authentication checks to resolve any account and conversation, then obtain signed PUT URLs to write arbitrary data to the application&#8217;s storage backend.<\/p>\n<p>  Severity: 8.8 | 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-2026-63765 Published : July 23, 2026, 7:17 p.m. | 32\u00a0minutes ago Description :Chatwoot before 4.16.0 contains an authentication bypass vulnerability in the direct uploads controller that allows unauthenticated attackers to create arbitrary ActiveStorage blobs in any tenant account. Attackers can exploit missing authentication checks to resolve any account and conversation, then obtain signed &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-82461","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82461","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=82461"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82461\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=82461"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=82461"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=82461"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}