CVE-2026-35634: OpenClaw — MEDIUM

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...

Full CISO analysis pending enrichment.

What systems are affected?

Package	Ecosystem	Vulnerable Range	Patched
OpenClaw	pip	—	No patch
4 dependents 37% patched ~3d to patch Full package profile →

Do you use OpenClaw? You're affected.

How severe is it?

CVSS 3.1

5.1 / 10

EPSS

N/A

Exploitation Status

No known exploitation

Sophistication

N/A

What is the attack surface?

AV Local

AC Low

PR None

UI None

S Unchanged

C Low

I Low

A None

What should I do?

No patch available

Monitor for updates. Consider compensating controls or temporary mitigations.

Which compliance frameworks are affected?

Compliance analysis pending. Sign in for full compliance mapping when available.

Frequently Asked Questions

What is CVE-2026-35634?

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.

Is CVE-2026-35634 actively exploited?

No confirmed active exploitation of CVE-2026-35634 has been reported, but organizations should still patch proactively.

How to fix CVE-2026-35634?

No patch is currently available. Monitor vendor advisories for updates.

What is the CVSS score for CVE-2026-35634?

CVE-2026-35634 has a CVSS v3.1 base score of 5.1 (MEDIUM).

What are the technical details?

Original Advisory

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.

Weaknesses (CWE)

CWE-288 Authentication Bypass Using an Alternate Path or Channel

CWE-288 — Authentication Bypass Using an Alternate Path or Channel: The product requires authentication, but the product has an alternate path or channel that does not require authentication.

[Architecture and Design] Funnel all access through a single choke point to simplify how users can access a resource. For every access, perform a check to determine if the user has permissions to access the resource.

Source: MITRE CWE corpus.