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Advisories

OpenClaw < 2026.2.13 - Timing Attack via Hook Token Comparison

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severity
medium
date
Affecting

  • OpenClaw < 2026.2.13

CWE
  • CWE-208 Observable Timing Discrepancy
CVSS
6.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Credit
Francois Paul Lambert (@Abeyron)
Description
OpenClaw versions prior to 2026.2.13 use non-constant-time string comparison for hook token validation, allowing attackers to infer tokens through timing measurements. Remote attackers with network access to the hooks endpoint can exploit timing side-channels across multiple requests to gradually recover the authentication token.

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