OpenClaw has Missing Webhook Authentication in Telnyx Provider Allowing Unauthenticated Requests
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-306.
Summary
OpenClaw is a personal AI assistant. Versions 2026.2.13 and below allow the optional @openclaw/voice-call plugin Telnyx webhook handler to accept unsigned inbound webhook requests when telnyx.publicKey is not configured, enabling unauthenticated callers to forge Telnyx events. Telnyx webhooks are expected to be authenticated via Ed25519 signature verification. In affected versions, TelnyxProvider.verifyWebhook() could effectively fail open when no Telnyx public key was configured, allowing arbitrary HTTP POST requests to the voice-call webhook endpoint to be treated as legitimate Telnyx events. This only impacts deployments where the Voice Call plugin is installed, enabled, and the webhook endpoint is reachable from the attacker (for example, publicly exposed via a tunnel/proxy). The issue has been fixed in version 2026.2.14.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| OpenClaw | openclaw | before 2026.2.14 | 2026.2.14 | Patch available | CNA |
| — | openclaw (npm) | before 2026.2.14 | 2026.2.14 | Patch available | GHSA-4hg8-92x6-h2f3 |
- openclaw VendorOpenClaw Affected before 2026.2.14 Fixed in 2026.2.14 Patch available CNA
- openclaw (npm) Vendor— Affected before 2026.2.14 Fixed in 2026.2.14 Patch available GHSA-4hg8-92x6-h2f3
Remediation
- Fix · CNA openclaw (openclaw) Fixed in 2026.2.14
- Fix · GHSA-4hg8-92x6-h2f3 openclaw (npm) Fixed in 2026.2.14 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-26319
- 2026-10-03 Alias added: GHSA-4hg8-92x6-h2f3
- 2026-10-18 Priority changed: LOW → MEDIUM
- 2026-10-25 Priority changed: MEDIUM → LOW
References
Patch 2
Advisory 2
More Openclaw vulnerabilities
- TI-2026-25309 OpenClaw < 2026.3.28 Media Parsing Path Traversal to Arbitrary File Read CVSS 4.0HIGH 8.7
- TI-2026-20394 Exposure of resource to wrong sphere in OpenClaw CVSS 3.1HIGH 8.8
- TI-2026-27742 OpenClaw < 2026.3.24 - Arbitrary Code Execution via .npmrc in Local Plugin/Hook Installation CVSS 4.0HIGH 8.4
- TI-2026-27766 OpenClaw < 2026.3.24 - Denial of Service via Feishu Webhook Pre-Auth Body Parsing CVSS 4.0MEDIUM 6.9
- TI-2026-07315 OpenClaw bluebubbles Webhook monitor.ts handleBlueBubblesWebhookRequest improper authentication CVSS 4.0MEDIUM 6.9
- TI-2026-17789 OpenClaw < 2026.2.22 - Allowlist Bypass via Command Substitution in system.run CVSS 4.0HIGH 7.5
Sources
- CVE-2026-26319 · CVE Program
- CVE-2026-26319 · NVD
- FIRST EPSS
- GHSA-4hg8-92x6-h2f3 · GitHub Advisory Database · CC BY 4.0
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