CVE-2026-2345 (GCVE-0-2026-2345)

Vulnerability from cvelistv5 – Published: 2026-02-11 14:49 – Updated: 2026-02-11 21:19
VLAI?
Title
Insufficient Origin Validation in Proctorio Chrome Extension postMessage Handlers
Summary
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)
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
CWE
  • CWE-346 - Origin Validation Error
Assigner
References
Impacted products
Vendor Product Version
Proctorio Secure Exam Proctor Extension Affected: 1.5.25220.33
Unaffected: 1.5.25220.36
Create a notification for this product.
Credits
Caen Jones (@vcc3v)
Show details on NVD website
To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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