CVE-2026-29606
MEDIUMCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Lifecycle Timeline
3Description
OpenClaw versions prior to 2026.2.14 contain a webhook signature-verification bypass in the voice-call extension that allows unauthenticated requests when the tunnel.allowNgrokFreeTierLoopbackBypass option is explicitly enabled. An external attacker can send forged requests to the publicly reachable webhook endpoint without a valid X-Twilio-Signature header, resulting in unauthorized webhook event handling and potential request flooding attacks.
Analysis
Openclaw versions up to 2026.2.14 is affected by missing authentication for critical function (CVSS 6.5).
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Audit authentication configurations.
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External POC / Exploit Code
Leaving vuln.today
GHSA-c37p-4qqg-3p76