GHSA-4p4f-fc8q-84m3 CVE-2026-41398
OpenClaw: iOS A2UI bridge trusted generic local-network pages for agent.request dispatch
- Severity
- 0.0 / 10
- Medium · CVSS 4.0
- Exploit chance (EPSS)
- 0.11%
- Chance of exploitation in the next 30 days. Higher than 1.28% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-284 Improper Access Control
- Fix
2026.4.2- Upgrade openclaw to this version or later
Description
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 for reporting.
Affected versions
npm
| Package | Vulnerable | Fixed in |
|---|---|---|
| openclaw | < 2026.4.2 |
2026.4.2 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
openclaw npm → 2026.4.2
- npm
npm install openclaw@2026.4.2- yarn
yarn add openclaw@2026.4.2- pnpm
pnpm add openclaw@2026.4.2
Severity breakdown
CVSS 4.0 0.0
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
- Attack vector
- Network
- Attack complexity
- Low
- Attack requirements
- None
- Privileges required
- None
- User interaction
- None
- Confidentiality (vulnerable system)
- None
- Integrity (vulnerable system)
- Low
- Availability (vulnerable system)
- Low
- Confidentiality (subsequent systems)
- None
- Integrity (subsequent systems)
- None
- Availability (subsequent systems)
- None
CVSS 3.1 4.6
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
- Attack vector
- Adjacent
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- Low
- Availability
- Low
Weakness
CWE-284: Improper Access Control
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
How to prevent it
- Architecture and Design, Operation: Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
- Architecture and Design: Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
References
Advisories
Packages
Other links
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-3x84-qq85-fj65 OpenClaw: Browser CDP discovery could accept blocked WebSocket URLs | High | Also affects openclaw |
| GHSA-9c3v-684m-579c OpenClaw MCP SSE redirects could forward Authorization headers | Medium | Also affects openclaw |
| GHSA-f397-5vjw-v2c2 OpenClaw: Shell inline-command parsing could miss an allowlist check | High | Also affects openclaw |
| GHSA-rx78-29qr-5hq8 OpenClaw: Workspace-derived service PATH could influence trash command selection | High | Also affects openclaw |
| GHSA-ccwh-wwpp-6wg5 OpenClaw: Host environment sanitizer missed two Node.js control variables | High | Also affects openclaw |
| GHSA-985f-72mj-8gf7 OpenClaw: Tool group policy callers could accept unvalidated group IDs | Medium | Also affects openclaw |
| GHSA-9v8j-9c9g-w66c OpenClaw: Bootstrap token replay could widen pending pairing scopes | Medium | Also affects openclaw |
| GHSA-c226-q6fx-6j6c OpenClaw: macOS Swift exec allowlist missed combined POSIX inline flags | Medium | Also affects openclaw |
MergeHarbor checks every repository's dependencies against this database, ranks what matters by exploitability and reachability, routes it to the owning team and opens the fix pull request.
Check your repos with MergeHarbor