CVE-2026-2345 - Insufficient Origin Validation in Proctorio Chrome Extension postMessage Handlers

CVE-2026-2345 - Insufficient Origin Validation in Proctorio Chrome Extension postMessage Handlers

https://cvefeed.io/rssfeed/latest.atom / Wed, 02/11/2026 - 20:01
CVE ID : CVE-2026-2345
Published : Feb. 11, 2026, 3:16 p.m. | 3 hours, 4 minutes ago
Description : Proctorio Chrome Extension is a browser extension used for online proctoring. The extension contains multiple window.addEventListener('message', ...) 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.
Severity: 3.6 | LOW
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Kenya Education Network CERT(KENET-CERT) is a Cybersecurity Emergency Response Team and Co-ordination Center operated by the National Research and Education Network of Kenya. KENET-CERT coordination center promotes awareness on cybersecurity incidences as well as coordinates and assists member institutions in responding effectively to cyber security threats and incidences. KENET-CERT works closely with Kenya's National CIRT coordination center (CIRT/CC) as a sector CIRT for the academic institutions. KENET promotes use of ICT in Teaching, Learning and Research in Higher Education Institutions in Kenya. KENET aims to interconnect all the Universities, Tertiary and Research Institutions in Kenya by setting up a cost effective and sustainable private network with high speed access to the global Internet. KENET also facilitates electronic communication among students and faculties in member institutions, share learning and teaching resources by collaboration in Research and Development of Educational content.