CVE-2026-35634 | THREATINT

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.

PUBLISHED Reserved 2026-04-04 | Published 2026-04-09 | Updated 2026-04-10 | Assigner VulnCheck

MEDIUM: 5.1CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

MEDIUM: 5.1CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Problem types

CWE-288: Authentication Bypass Using an Alternate Path or Channel

Product status

Default status

unaffected

Any version before 2026.3.23

affected

2026.3.23 (semver)

unaffected

Credits

smaeljaish771 reporter

References

github.com/...enclaw/security/advisories/GHSA-6mqc-jqh6-x8fc (GitHub Security Advisory (GHSA-6mqc-jqh6-x8fc)) third-party-advisory

github.com/...ommit/630f1479c44f78484dfa21bb407cbe6f171dac87 (Patch Commit #1) patch

github.com/...ommit/d5dc6b6573ae489bc7e5651090f4767b93537c9e (Patch Commit #2) patch

www.vulncheck.com/...local-direct-requests-in-canvas-gateway (VulnCheck Advisory: OpenClaw < 2026.3.23 - Authentication Bypass via Local-Direct Requests in Canvas Gateway) third-party-advisory

cve.org (CVE-2026-35634)

nvd.nist.gov (CVE-2026-35634)

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