CVE-2026-35646
Published:April 09, 2026
Updated:August 06, 2026
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.
Affected Packages
https://github.com/openclaw/openclaw.git (GITHUB):
Affected version(s) >=v0.1.0 <2026.3.25Fix Suggestion:
Update to version 2026.3.25openclaw (NPM):
Affected version(s) >=0.0.1 <2026.3.25Fix Suggestion:
Update to version 2026.3.25openclaw (NPM):
Affected version(s) >=0.0.1 <2026.3.28Fix Suggestion:
Update to version 2026.3.28Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.8
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
EPSS
Base Score:
0.24