CVE-2026-29606

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-29606", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-03-04T16:16:15.967Z", "datePublished": "2026-03-05T22:00:05.680Z", "dateUpdated": "2026-03-09T20:38:15.101Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "packageURL": "pkg:npm/openclaw", "product": "OpenClaw", "vendor": "OpenClaw", "versions": [{"lessThan": "2026.2.14", "status": "affected", "version": "0", "versionType": "custom"}]}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*", "versionEndExcluding": "2026.2.14", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "credits": [{"lang": "en", "type": "reporter", "value": "Peyton Kennedy (p80n-sec)"}], "datePublic": "2026-02-15T00:00:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>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.</p>"}], "value": "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."}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 6.3, "baseSeverity": "MEDIUM", "exploitMaturity": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-306", "description": "Missing Authentication for Critical Function", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-03-06T16:45:17.441Z"}, "references": [{"name": "GitHub Security Advisory (GHSA-c37p-4qqg-3p76)", "tags": ["vendor-advisory"], "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-c37p-4qqg-3p76"}, {"name": "Patch Commit", "tags": ["patch"], "url": "https://github.com/openclaw/openclaw/commit/ff11d8793b90c52f8d84dae3fbb99307da51b5c9"}, {"name": "VulnCheck Advisory: OpenClaw < 2026.2.14 - Webhook Signature Verification Bypass via ngrok Loopback Compatibility", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/openclaw-webhook-signature-verification-bypass-via-ngrok-loopback-compatibility"}], "source": {"discovery": "UNKNOWN"}, "title": "OpenClaw < 2026.2.14 - Webhook Signature Verification Bypass via ngrok Loopback Compatibility", "x_generator": {"engine": "vulncheck"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-03-09T20:38:07.703223Z", "id": "CVE-2026-29606", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-09T20:38:15.101Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-29606", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-03-09T20:38:07.703223Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-09T20:38:10.770Z"}}], "cna": {"title": "OpenClaw < 2026.2.14 - Webhook Signature Verification Bypass via ngrok Loopback Compatibility", "source": {"discovery": "UNKNOWN"}, "credits": [{"lang": "en", "type": "reporter", "value": "Peyton Kennedy (p80n-sec)"}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "LOW", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}, {"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "OpenClaw", "product": "OpenClaw", "versions": [{"status": "affected", "version": "0", "lessThan": "2026.2.14", "versionType": "custom"}], "packageURL": "pkg:npm/openclaw", "defaultStatus": "unaffected"}], "datePublic": "2026-02-15T00:00:00.000Z", "references": [{"url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-c37p-4qqg-3p76", "name": "GitHub Security Advisory (GHSA-c37p-4qqg-3p76)", "tags": ["vendor-advisory"]}, {"url": "https://github.com/openclaw/openclaw/commit/ff11d8793b90c52f8d84dae3fbb99307da51b5c9", "name": "Patch Commit", "tags": ["patch"]}, {"url": "https://www.vulncheck.com/advisories/openclaw-webhook-signature-verification-bypass-via-ngrok-loopback-compatibility", "name": "VulnCheck Advisory: OpenClaw < 2026.2.14 - Webhook Signature Verification Bypass via ngrok Loopback Compatibility", "tags": ["third-party-advisory"]}], "x_generator": {"engine": "vulncheck"}, "descriptions": [{"lang": "en", "value": "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.", "supportingMedia": [{"type": "text/html", "value": "<p>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.</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-306", "description": "Missing Authentication for Critical Function"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*", "vulnerable": true, "versionEndExcluding": "2026.2.14"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-03-06T16:45:17.441Z"}}}, "cveMetadata": {"cveId": "CVE-2026-29606", "state": "PUBLISHED", "dateUpdated": "2026-03-09T20:38:15.101Z", "dateReserved": "2026-03-04T16:16:15.967Z", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "datePublished": "2026-03-05T22:00:05.680Z", "assignerShortName": "VulnCheck"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageURL": "pkg:npm/openclaw", "product": "OpenClaw", "vendor": "OpenClaw", "versions": [{"lessThan": "2026.2.14", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "disclosure@vulncheck.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "0F3079A3-9FBD-4E87-821D-5CAF0622C555", "versionEndExcluding": "2026.2.14", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Versiones de OpenClaw anteriores a 2026.2.14 contienen un bypass de verificaci\u00f3n de firma de webhook en la extensi\u00f3n de llamadas de voz que permite solicitudes no autenticadas cuando la opci\u00f3n tunnel.allowNgrokFreeTierLoopbackBypass est\u00e1 expl\u00edcitamente habilitada. Un atacante externo puede enviar solicitudes falsificadas al endpoint de webhook accesible p\u00fablicamente sin un encabezado X-Twilio-Signature v\u00e1lido, lo que resulta en un manejo no autorizado de eventos de webhook y posibles ataques de inundaci\u00f3n de solicitudes."}], "id": "CVE-2026-29606", "lastModified": "2026-06-17T10:29:48.970", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 2.5, "source": "disclosure@vulncheck.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 2.5, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-29606", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-09T20:38:07.703223Z", "version": "2.0.3"}}]}, "published": "2026-03-05T22:16:23.850", "references": [{"source": "disclosure@vulncheck.com", "tags": ["Patch"], "url": "https://github.com/openclaw/openclaw/commit/ff11d8793b90c52f8d84dae3fbb99307da51b5c9"}, {"source": "disclosure@vulncheck.com", "tags": ["Vendor Advisory"], "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-c37p-4qqg-3p76"}, {"source": "disclosure@vulncheck.com", "tags": ["Third Party Advisory"], "url": "https://www.vulncheck.com/advisories/openclaw-webhook-signature-verification-bypass-via-ngrok-loopback-compatibility"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-306"}], "source": "disclosure@vulncheck.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2026.2.14)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "OpenClaw", "source": "cna", "vendor": "OpenClaw"}, "product": "openclaw", "vendor": "openclaw"}], "analysis": {"en": {"generated_at": "2026-04-16T11:54:46.500041+00:00", "value": {"mitigation_remediation": ["Apply the official patch by upgrading to OpenClaw\u00a02026.2.14 or a later version that restores correct webhook signature validation.", "Disable the tunnel.allowNgrokFreeTierLoopbackBypass option in the OpenClaw configuration until a patch is applied.", "Restrict inbound traffic to the webhook endpoint with firewall or API\u2011gateway rules, or enforce the presence of a valid X\u2011Twilio\u2011Signature header as an additional gate against unauthenticated requests."], "summary": {"action": "Apply Patch", "impact": "Unauthorized Webhook Event Handling and Potential Flooding"}, "threat_synthesis": {"affected_systems": "Any OpenClaw installation using the voice\u2011call extension and running a version earlier than 2026.2.14 is vulnerable. The affected products are identified as OpenClaw:OpenClaw and the vulnerability applies to all CPE strings matching cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*.", "description_and_impact": "OpenClaw versions before 2026.2.14 have a bypass in the voice\u2011call extension that allows an attacker to send requests to the publicly exposed webhook endpoint without supplying a valid X\u2011Twilio\u2011Signature header. Because the verification logic is disabled when the tunnel.allowNgrokFreeTierLoopbackBypass option is enabled, the webhook processes forged events as legitimate, enabling an attacker to trigger arbitrary webhook actions or flood the endpoint with unwanted traffic. This flaw is a missing authentication vulnerability (CWE\u2011306).", "risk_and_exploitability": "The CVSS score of 6.3 indicates a moderate severity, while the EPSS score of less than 1% suggests a low probability of exploitation in the near term. The flaw is not listed in the CISA KEV catalog, further reducing its current exposure. Attackers can exploit the vulnerability remotely by sending crafted webhook events to the public endpoint; no authentication or privileged access is required beyond knowing the URL. If the bypass option is enabled, the attack can affect all users of the affected OpenClaw instance, potentially leading to denial of service or unauthorized processing of events."}}}}, "created": "2026-03-06T14:56:50.361673+00:00", "updated": "2026-04-16T12:00:11.704616+00:00", "vendors": ["openclaw", "openclaw$PRODUCT$openclaw"]}