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Advisories

OpenClaw before 2026.8.2 Denial of Service via Browser Relay

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severity
medium
date
Affecting

  • OpenClaw >= 0, < 2026.8.2

CWE
  • CWE-400 Uncontrolled Resource Consumption
CVSS
6.9
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Credit
rexpository
Description
OpenClaw before 2026.8.2 contains a denial of service vulnerability in the Browser extension relay that allows unauthenticated network sources to exhaust pending-authentication capacity. Attackers can hold every pending slot by maintaining silent WebSocket upgrades, preventing paired extensions from completing Browser Relay Authentication v2.

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