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Unintended Proxy or Intermediary ('Confused Deputy')

CVE-2026-106266

Medium
6.5/10

Summary

Confused deputy in Contextual Tasks in Google Chrome prior to 155.0.8059.39 allowed a remote attacker who had compromised the renderer process to bypass web origin policy into a privileged page via a crafted HTML page. (Chromium security severity: Medium)

  • LOW
  • NETWORK
  • HIGH
  • UNCHANGED
  • REQUIRED
  • NONE
  • NONE
  • NONE

CWE-441 - Unintended Proxy or Intermediary ('Confused Deputy')

The product receives a request, message, or directive from an upstream component, but the product does not sufficiently preserve the original source of the request before forwarding the request to an external actor that is outside of the product's control sphere. This causes the product to appear to be the source of the request, leading it to act as a proxy or other intermediary between the upstream component and the external actor.

Advisory Timeline

  • Published