OpenClaw has Canvas route hardening for mixed-trust deployments

View on GitHub ↗

Description

Summary

This advisory tracks a defense-in-depth hardening for canvas routes. In mixed-trust or network-visible deployments, prior canvas auth/fallback behavior could broaden access beyond intended boundaries.

Deployment Context

OpenClaw’s default model is trusted host + loopback-first access. Some operators intentionally expose canvas routes on LAN/tailnet. This update is aimed at those broader deployment patterns.

What Changed

  • Require explicit token or session-capability authorization for canvas routes.
  • Remove shared-IP fallback paths for canvas access.
  • Tighten bind/fallback behavior to fail closed.

Impact

Risk was highest in non-loopback or mixed-trust environments. In strict single-operator trusted-host setups, practical exposure is lower.

Affected Packages / Versions

  • Package: openclaw (npm)
  • Vulnerable: <= 2026.2.19-2
  • Patched: 2026.2.21 (next release target)

Fix Commit(s)

  • c45f3c5b004c8d63dc0e282e2176f8c9355d24f1
  • 08a7967936cfc0b2af6b27ec1f9272542648ad6c

Thanks @NucleiAv for reporting.

Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2026-03-03 23:17:06 UTC
Updated
2026-03-03 23:17:07 UTC
GitHub reviewed
2026-03-03 23:17:06 UTC

CVSS Scores

Base score Version Severity Vector
6.3 4.0 —
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network.
Attack complexity (AC:L)
Exploitation conditions are straightforward and stable.
Attack requirements (AT:N)
No additional preconditions are required beyond normal reachability.
Privileges required (PR:L)
Low privileges are required.
User interaction (UI:P)
A user has to participate (for example click/open/approve).
Vulnerable system confidentiality impact (VC:N)
No confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:N)
No integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:N)
No availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:H)
High confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:H)
High integrity impact on subsequent systems.
Subsequent system availability impact (SA:N)
No availability impact on subsequent systems.

Identifiers

Type Value
GHSA GHSA-cjv3-m589-v3rx ↗

CWEs

CWE id Name
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-1021 Improper Restriction of Rendered UI Layers or Frames

Credits

  • NucleiAv (reporter)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
npm openclaw < 2026.2.21 2026.2.21 —

References

cvelogic Threat Intelligence