{"id":76929,"date":"2026-02-11T18:46:18","date_gmt":"2026-02-11T15:16:18","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-2345-insufficient-origin-validation-in-proctorio-chrome-extension-postmessage-handlers\/"},"modified":"2026-02-11T18:46:18","modified_gmt":"2026-02-11T15:16:18","slug":"cve-2026-2345-insufficient-origin-validation-in-proctorio-chrome-extension-postmessage-handlers","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-2345-insufficient-origin-validation-in-proctorio-chrome-extension-postmessage-handlers\/","title":{"rendered":"CVE-2026-2345 &#8211; Insufficient Origin Validation in Proctorio Chrome Extension postMessage Handlers"},"content":{"rendered":"<p>CVE ID : CVE-2026-2345<\/p>\n<p>Published :  Feb. 11, 2026, 3:16 p.m. | 1\u00a0hour, 8\u00a0minutes ago<\/p>\n<p>Description : Proctorio Chrome Extension is a browser extension used for online proctoring. The extension contains multiple window.addEventListener(&#8216;message&#8217;, &#8230;) handlers that do not properly validate the origin of incoming messages. Specifically, an internal messaging bridge processes messages based solely on the presence of a fromWebsite property without verifying the event.origin attribute.<\/p>\n<p>Severity: 3.6 | LOW<\/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-2026-2345 Published : Feb. 11, 2026, 3:16 p.m. | 1\u00a0hour, 8\u00a0minutes ago Description : Proctorio Chrome Extension is a browser extension used for online proctoring. The extension contains multiple window.addEventListener(&#8216;message&#8217;, &#8230;) handlers that do not properly validate the origin of incoming messages. Specifically, an internal messaging bridge processes messages based solely on &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-76929","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/76929","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=76929"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/76929\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=76929"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=76929"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=76929"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}