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Time-of-check Time-of-use (TOCTOU) Race Condition

CVE-2026-106300

Medium
4.7/10

Summary

Race condition in CacheStorage in Google Chrome prior to 155.0.8059.39 allowed a remote attacker who had compromised the renderer process to read memory outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

  • LOW
  • NETWORK
  • NONE
  • CHANGED
  • REQUIRED
  • NONE
  • LOW
  • NONE

CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

The software checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the software to perform invalid actions when the resource is in an unexpected state.

Advisory Timeline

  • Published