Moderate severityNVD Advisory· Published Mar 5, 2026· Updated Mar 9, 2026
OpenClaw < 2026.2.14 - Webhook Signature Verification Bypass via ngrok Loopback Compatibility
CVE-2026-29606
Description
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
openclawnpm | < 2026.2.14 | 2026.2.14 |
Affected products
2Patches
Vulnerability mechanics
References
6- github.com/openclaw/openclaw/commit/ff11d8793b90c52f8d84dae3fbb99307da51b5c9ghsapatchWEB
- github.com/advisories/GHSA-c37p-4qqg-3p76ghsaADVISORY
- github.com/openclaw/openclaw/security/advisories/GHSA-c37p-4qqg-3p76ghsavendor-advisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-29606ghsaADVISORY
- www.vulncheck.com/advisories/openclaw-webhook-signature-verification-bypass-via-ngrok-loopback-compatibilityghsathird-party-advisoryWEB
- github.com/openclaw/openclaw/releases/tag/v2026.2.14ghsaWEB
News mentions
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