CVE-2026-35626

Medium

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.

SeverityMedium

CVSS5.3

Exploit probability—

ProductOpenclaw

PublishedApr 9, 2026

First seenApr 9, 2026

Weakness typeCWE-405CWE-405

How to fix

Update

openclaw openclaw2026.3.22 or later
openclaw2026.3.22 or later

Patches

Vendor advisories

github.com/openclaw/openclaw/security/advisories/GHSA-rm59-992w-x2mv

Affected products

Product	Affected versions	Fixed in
openclaw openclaw	v < 2026.3.22	2026.3.22
openclawnpm	v < 2026.3.22	2026.3.22

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