OpenClaw before 2026.4.2 contains an improper access control vulnerability in the iOS A2UI bridge that treats generic local-network pages as trusted origins.
Date: 2026-04
Affected: openclaw/openclaw
Attack vector: auth-bypass
Category: vulnerability-disclosure
Severity: Medium
CVE: CVE-2026-41398
CWE: CWE-346
CVSS: 4.6 (CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L)

OpenClaw before 2026.4.2 contains an improper access control vulnerability in the iOS A2UI bridge that treats generic local-network pages as trusted origins. Attackers can inject unauthorized agent.request runs by loading attacker-controlled pages from local-network or tailnet hosts, polluting session state and consuming budget.


Mitigations:

Architectural layers (MAESTRO):