What’s Vulnerable › Vulnerabilities

CVE-2026-35634: OpenClaw < 2026.3.23 - Authentication Bypass via Local-Direct Requests in Canvas Gateway

• Severity: medium (CVSS 5.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-09 · updated 2026-06-17
• Weakness: CWE-288

Description

OpenClaw before 2026.3.23 contains an authentication bypass vulnerability in the Canvas gateway where authorizeCanvasRequest() unconditionally allows local-direct requests without validating bearer tokens or canvas capabilities. Attackers can send unauthenticated loopback HTTP and WebSocket requests to Canvas routes to bypass authentication and gain unauthorized access.

Affected products

• OpenClaw: before 2026.3.23 — fixed in 2026.3.23

How to fix

Upgrade to a fixed version: OpenClaw 2026.3.23. Check the vendor advisory for mitigations.

References

• https://github.com/openclaw/openclaw/commit/630f1479c44f78484dfa21bb407cbe6f171dac87
• https://github.com/openclaw/openclaw/commit/d5dc6b6573ae489bc7e5651090f4767b93537c9e
• https://github.com/openclaw/openclaw/security/advisories/GHSA-6mqc-jqh6-x8fc
• https://www.vulncheck.com/advisories/openclaw-authentication-bypass-via-local-direct-requests-in-canvas-gateway

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