CVE-2026-35626CWE-405

OpenClaw < 2026.3.22 - Unauthenticated Resource Exhaustion via Voice Call Webhook

Medium · published April 9, 2026

CVSS v4.0
6.9
EPSS
1%
Percentile
52.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
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
EPSS
0.00701 · 52.7th percentile
Weakness
CWE-405 · Asymmetric Resource Consumption (Amplification)
Published
2026-04-09T21:26Z
EPSS history
Timeline
  • 09 APR 21:26Z
    OpenClaw < 2026.3.22 - Unauthenticated Resource Exhaustion via Voice Call Webhook
    cvelistv5