Improper Restriction of Excessive Authentication Attempts Affecting openclaw package, versions <2026.4.2-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.08% (24th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-OPENCLAW-15954421
  • published9 Apr 2026
  • disclosed9 Apr 2026

Introduced: 9 Apr 2026

CVE-2026-35646  (opens in a new tab)
CWE-307  (opens in a new tab)

How to fix?

Upgrade Minimos:latest openclaw to version 2026.4.2-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openclaw package and not the openclaw package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

OpenClaw before 2026.3.25 contains a pre-authentication rate-limit bypass vulnerability in webhook token validation that allows attackers to brute-force weak webhook secrets. The vulnerability exists because invalid webhook tokens are rejected without throttling repeated authentication attempts, enabling attackers to guess weak tokens through rapid successive requests.

CVSS Base Scores

version 3.1