CVE-2026-29606: Openclaw OpenClaw Twilio Voice-call Webhook Auth Vulnerability
MODERATECVE-2026-29606 is a MODERATE (CVSS 6.5) openclaw twilio voice-call webhook auth vulnerability (CWE-306: Missing Authentication for Critical Function) affecting Openclaw libraries in the npm ecosystem. The issue involves openclaw twilio voice-call webhook auth bypass when ngrok loopback compatibility is enabled. Remediation is available by upgrading affected packages to version 2026.2.14.
CVE-2026-29606 at a Glance
Security Impact
CVSS: 6.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L).
How to Fix CVE-2026-29606
To remediate this vulnerability, upgrade all affected Openclaw dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
npm install openclaw@2026.2.14Run the following command in your project directory to verify that all resolved dependencies use the patched release:
npm ls openclawHow to Check if You Are Affected
To determine whether your Node.js application is affected by CVE-2026-29606, inspect your project dependencies using npm:
npm ls openclawAnalyze the terminal output to locate any version of Openclaw in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2026.2.14), your application is affected.
Note: The npm ls openclaw command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-306: Missing Authentication for Critical Function, where the product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. In Openclaw, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-29606 Affected Openclaw Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
openclaw
|
npm |
< 2026.2.14
|
2026.2.14
|
References
Frequently Asked Questions
What is CVE-2026-29606?
Which Openclaw versions are affected?
What version fixes CVE-2026-29606?
Is openclaw affected?
What is the CVSS score of CVE-2026-29606?
What CWE is associated with CVE-2026-29606?
How can I check npm dependencies for CVE-2026-29606?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-c37p-4qqg-3p76",
"modified" : "2026-03-06T01:03:39Z",
"published" : "2026-02-18T00:54:48Z",
"aliases" : [ "CVE-2026-29606" ],
"summary" : "OpenClaw Twilio voice-call webhook auth bypass when ngrok loopback compatibility is enabled",
"details" : "## Summary\n\nA Twilio webhook signature-verification bypass in the voice-call extension could allow unauthenticated webhook requests when a specific ngrok free-tier compatibility option is enabled.\n\n## Impact\n\nThis issue is limited to configurations that explicitly enable and expose the voice-call webhook endpoint.\n\nNot affected by default:\n- The voice-call extension is optional and disabled by default.\n- The bypass only applied when `tunnel.allowNgrokFreeTierLoopbackBypass` was explicitly enabled.\n- Exploitation required the webhook to be reachable (typically via a public ngrok URL during development).\n\nWorst case (when exposed and the option was enabled):\n- An external attacker could send forged requests to the publicly reachable webhook endpoint that would be accepted without a valid `X-Twilio-Signature`.\n- This could result in unauthorized webhook event handling (integrity) and request flooding (availability).\n\n## Affected Packages / Versions\n\n- Package: `openclaw` (npm)\n- Affected versions: `<= 2026.2.13` (latest published as of 2026-02-14)\n- Patched versions: `>= 2026.2.14` (planned next release; pending publish)\n\n## Fix\n\n`allowNgrokFreeTierLoopbackBypass` no longer bypasses signature verification. It only enables trusting forwarded headers on loopback so the public ngrok URL can be reconstructed for correct signature validation.\n\nFix commit(s):\n- ff11d8793b90c52f8d84dae3fbb99307da51b5c9\n\nThanks @p80n-sec for reporting.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"
}, {
"type" : "CVSS_V4",
"score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "npm",
"name" : "openclaw"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "2026.2.14"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/openclaw/openclaw/security/advisories/GHSA-c37p-4qqg-3p76"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-29606"
}, {
"type" : "WEB",
"url" : "https://github.com/openclaw/openclaw/commit/ff11d8793b90c52f8d84dae3fbb99307da51b5c9"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/openclaw/openclaw"
}, {
"type" : "WEB",
"url" : "https://github.com/openclaw/openclaw/releases/tag/v2026.2.14"
}, {
"type" : "WEB",
"url" : "https://www.vulncheck.com/advisories/openclaw-webhook-signature-verification-bypass-via-ngrok-loopback-compatibility"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-306" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2026-02-18T00:54:48Z",
"nvd_published_at" : "2026-03-05T22:16:23Z"
}
}