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Advisories

OpenClaw < 2026.3.25 - Brute-Force Attack via Missing Telegram Webhook Rate Limiting

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severity
medium
date
Affecting

  • OpenClaw < 2026.3.25

CWE
  • CWE-307 Improper Restriction of Excessive Authentication Attempts
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
Peng Zhou (@zpbrent)
Description
OpenClaw before 2026.3.25 contains a missing rate limiting vulnerability in Telegram webhook authentication that allows attackers to brute-force weak webhook secrets. The vulnerability enables repeated authentication guesses without throttling, permitting attackers to systematically guess webhook secrets through brute-force attacks.

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