CVE-2026-2345
Proctorio · published 2026-02-11
Source record Collected from the National Vulnerability Database (NVD)
Description
Description by Hackrate via the CVE Program.
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.
Filed by Hackrate; not a statement by Proctorio.
Status at the source
- NVD status: Deferred — NVD has not analysed this CVE.
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| Proctorio | Secure Exam Proctor Extension | 1.5.25220.33: affected 1.5.25220.36: unaffected |
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 3.1: 3.6 LOW — as published by Hackrate (Secondary)
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N - SSVC — CISA's assessment (SSVC 2.0.3, CISA Coordinator): Exploitation: none · Automatable: no · Technical impact: partial
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
Source dates: published 2026-02-11, last changed 2026-06-17. DeSpy's copy of this version is dated 2026-09-28.
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