{"id":68496,"date":"2025-08-20T20:32:06","date_gmt":"2025-08-20T17:02:06","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2025-50864-elysia-cors-origin-validation-bypass-vulnerability\/"},"modified":"2025-08-20T20:32:06","modified_gmt":"2025-08-20T17:02:06","slug":"cve-2025-50864-elysia-cors-origin-validation-bypass-vulnerability","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2025-50864-elysia-cors-origin-validation-bypass-vulnerability\/","title":{"rendered":"CVE-2025-50864 &#8211; Elysia-Cors Origin Validation Bypass Vulnerability"},"content":{"rendered":"<p><strong>CVE ID : <\/strong>CVE-2025-50864<br \/>\n<br \/>\n<strong>Published : <\/strong> Aug. 20, 2025, 3:15 p.m. | 1\u00a0hour ago<br \/>\n<br \/>\n<strong>Description : <\/strong>An Origin Validation Error in the elysia-cors library thru 1.3.0 allows attackers to bypass Cross-Origin Resource Sharing (CORS) restrictions. The library incorrectly validates the supplied origin by checking if it is a substring of any domain in the site&#8217;s CORS policy, rather than performing an exact match. For example, a malicious origin like &#8220;notexample.com&#8221;, &#8220;example.common.net&#8221; is whitelisted when the site&#8217;s CORS policy specifies &#8220;example.com.&#8221; This vulnerability enables unauthorized access to user data on sites using the elysia-cors library for CORS validation.<br \/>\n<br \/>\n<strong>Severity:<\/strong> 0.0 | NA<br \/>\n<br \/>\nVisit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID : CVE-2025-50864 Published : Aug. 20, 2025, 3:15 p.m. | 1\u00a0hour ago Description : An Origin Validation Error in the elysia-cors library thru 1.3.0 allows attackers to bypass Cross-Origin Resource Sharing (CORS) restrictions. The library incorrectly validates the supplied origin by checking if it is a substring of any domain in the site&#8217;s &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-68496","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/68496","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=68496"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/68496\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=68496"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=68496"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=68496"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}