OpenClaw before 2026.4.22 derives loopback MCP owner context from spoofable server-issued bearer tokens in request headers.
Date: 2026-05
Affected: openclaw/openclaw
Attack vector: other
Category: vulnerability-disclosure
Severity: High
CVE: CVE-2026-44118
CWE: CWE-290
CVSS: 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

OpenClaw before 2026.4.22 derives loopback MCP owner context from spoofable server-issued bearer tokens in request headers. Non-owner loopback clients can present themselves as owner to bypass owner-gated operations by manipulating the sender-owner header metadata.


Mitigations:

Architectural layers (MAESTRO):