#VU125138 Authentication Bypass by Alternate Name in OpenClaw - CVE-2026-34506
Published: April 8, 2026
Vulnerability identifier: #VU125138
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-34506
CWE-ID: CWE-289
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
OpenClaw
OpenClaw
Software vendor:
OpenClaw
OpenClaw
Description
The vulnerability allows a remote user to bypass sender authorization checks.
The vulnerability exists due to improper access control in the Microsoft Teams plugin message handler when processing messages for a route with a configured team/channel allowlist and an empty groupAllowFrom setting. A remote user can send messages from an unauthorized sender within the matched team/channel to bypass sender authorization checks.
This issue only arises when groupPolicy is set to "allowlist", a route allowlist is configured, and the sender allowlist is empty.
Remediation
Install security update from vendor's website.