OpenClaw before 2026.3.22 contains an unauthenticated resource exhaustion vulnerability in voice call webhook handling that buffers request bodies before provider signature checks. Attackers can send large or malicious webhook requests to exhaust server resources without authentication by bypassing signature validation.
History

Tue, 14 Apr 2026 03:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 09 Apr 2026 21:45:00 +0000

Type Values Removed Values Added
Description OpenClaw before 2026.3.22 contains an unauthenticated resource exhaustion vulnerability in voice call webhook handling that buffers request bodies before provider signature checks. Attackers can send large or malicious webhook requests to exhaust server resources without authentication by bypassing signature validation.
Title OpenClaw < 2026.3.22 - Unauthenticated Resource Exhaustion via Voice Call Webhook
First Time appeared Openclaw
Openclaw openclaw
Weaknesses CWE-405
CPEs cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*
Vendors & Products Openclaw
Openclaw openclaw
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 6.9, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-04-09T21:26:58.441Z

Updated: 2026-04-14T03:09:10.668Z

Reserved: 2026-04-04T12:28:49.756Z

Link: CVE-2026-35626

cve-icon Vulnrichment

Updated: 2026-04-14T03:09:05.290Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-04-09T22:16:31.047

Modified: 2026-04-13T15:02:27.760

Link: CVE-2026-35626

cve-icon Redhat

No data.