CVE-2026-41398: OpenClaw IOS A2UI Bridge Trusted Generic Vulnerability

MODERATE
Advisory Identifier: GHSA-4p4f-fc8q-84m3
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CWE-284
Published
Advisory Summary

CVE-2026-41398 is a MODERATE ios a2ui bridge trusted generic vulnerability (CWE-284: Improper Access Control) affecting OpenClaw libraries in the npm ecosystem. The issue involves ios a2ui bridge trusted generic local-network pages for agent.request dispatch. Remediation is available by upgrading affected packages to version 2026.4.2.

CVE-2026-41398 at a Glance

CVE Identifier CVE-2026-41398
GHSA Identifier GHSA-4p4f-fc8q-84m3
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-284: Improper Access Control
Affected Product OpenClaw
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2026-41398

To remediate this vulnerability, upgrade all affected OpenClaw dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

openclaw fixed: 2026.4.2 
npm install openclaw@2026.4.2
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls openclaw

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-41398, inspect your project dependencies using npm:

npm ls openclaw

Analyze the terminal output to locate any version of OpenClaw in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2026.4.2), your application is affected.

Note: The npm ls openclaw command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. In OpenClaw, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

## Summary Before OpenClaw 2026.4.2, the iOS A2UI bridge treated generic local-network pages as trusted bridge origins. A page loaded from a local-network or tailnet host could trigger agent.request dispatch without the stricter trusted-canvas origin check. ## Impact A loaded attacker-controlled page could inject unauthorized non-owner agent.request runs into the active iOS node session, polluting session state and consuming budget. The demonstrated impact did not include owner-only actions or arbitrary host execution. ## Affected Packages / Versions - Package: openclaw (npm) - Affected versions: <= 2026.4.1 - Patched versions: >= 2026.4.2 - Latest published npm version: 2026.4.1 ## Fix Commit(s) 49d08382a90f71dabe2877b3f6729ad85f808d57 — restrict A2UI action dispatch to trusted canvas URLs ## Release Process Note The fix is present on main and is staged for OpenClaw 2026.4.2. Publish this advisory after the 2026.4.2 npm release is live. Thanks [@nexrin](https://github.com/nexrin) for reporting.

CVE-2026-41398 Affected OpenClaw Versions

1 component(s)
Fixed Versions:
2026.4.2
Product / Package Ecosystem Affected Versions Fixed Version
openclaw
npm/openclaw
npm
< 2026.4.2
2026.4.2

References

GitHub Advisory / Wiki ADVISORY
https://github.com/openclaw/openclaw/security/advisories/GHSA-4p4f-fc8q-84m3
Security Fix Commit FIX COMMIT
https://github.com/openclaw/openclaw/commit/49d08382a90f71dabe2877b3f6729ad85f808d57
OpenClaw Source Repository REPOSITORY
https://github.com/openclaw/openclaw

Frequently Asked Questions

What is CVE-2026-41398?
CVE-2026-41398 is a security vulnerability in OpenClaw involving iOS A2UI bridge trusted generic local-network pages for agent.request dispatch under CWE-284: Improper Access Control.
Which OpenClaw versions are affected?
Affected versions include releases prior to 2026.4.2 across affected packages: openclaw.
What version fixes CVE-2026-41398?
Upgrading to 2026.4.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is openclaw affected?
Yes, openclaw is affected in releases prior to 2026.4.2. Upgrade your dependency to 2026.4.2 or later.
What CWE is associated with CVE-2026-41398?
CVE-2026-41398 is classified under CWE-284: Improper Access Control (The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.).
How can I check npm dependencies for CVE-2026-41398?
Run the dependency tree command: 'npm ls openclaw'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-4p4f-fc8q-84m3",
  "modified" : "2026-04-28T18:22:08Z",
  "published" : "2026-04-07T18:15:03Z",
  "aliases" : [ "CVE-2026-41398" ],
  "summary" : "OpenClaw: iOS A2UI bridge trusted generic local-network pages for agent.request dispatch",
  "details" : "## Summary\nBefore OpenClaw 2026.4.2, the iOS A2UI bridge treated generic local-network pages as trusted bridge origins. A page loaded from a local-network or tailnet host could trigger agent.request dispatch without the stricter trusted-canvas origin check.\n\n## Impact\nA loaded attacker-controlled page could inject unauthorized non-owner agent.request runs into the active iOS node session, polluting session state and consuming budget. The demonstrated impact did not include owner-only actions or arbitrary host execution.\n\n## Affected Packages / Versions\n- Package: openclaw (npm)\n- Affected versions: <= 2026.4.1\n- Patched versions: >= 2026.4.2\n- Latest published npm version: 2026.4.1\n\n## Fix Commit(s)\n49d08382a90f71dabe2877b3f6729ad85f808d57 — restrict A2UI action dispatch to trusted canvas URLs\n\n## Release Process Note\nThe fix is present on main and is staged for OpenClaw 2026.4.2. Publish this advisory after the 2026.4.2 npm release is live.\n\nThanks [@nexrin](https://github.com/nexrin) for reporting.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "openclaw"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2026.4.2"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2026.4.1"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/security/advisories/GHSA-4p4f-fc8q-84m3"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/commit/49d08382a90f71dabe2877b3f6729ad85f808d57"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openclaw/openclaw"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-284" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-07T18:15:03Z",
    "nvd_published_at" : null
  }
}