Improper Restriction of Excessive Authentication Attempts in OpenClaw - #VU125214
Published: April 8, 2026
Vulnerability identifier: #VU125214
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-307
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass webhook authentication.
The vulnerability exists due to improper restriction of excessive authentication attempts in the Telegram webhook authentication mechanism when handling repeated webhook secret guesses. A remote attacker can send repeated authentication attempts to bypass webhook authentication.
The issue is exploitable against weak webhook secrets.
Affected software
OpenClaw
Remediation
Install security update from vendor's website.