Resource exhaustion in OpenClaw - #VU125183
Published: April 8, 2026
Vulnerability identifier: #VU125183
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenClaw
Affected software:
OpenClaw
OpenClaw
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in the voice call webhook handler when processing webhook requests before provider signature checks. A remote attacker can send crafted webhook requests with oversized request bodies to cause a denial of service.
The issue is bounded by pre-auth body caps and occurs before signature verification.
Remediation
Install security update from vendor's website.