Missing Authorization in OpenClaw - CVE-2026-27158
Published: May 4, 2026
Vulnerability identifier: #VU129408
CSH Severity: Low
CVSS v4: 5.3 [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]
CVE-ID: CVE-2026-27158
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to bypass JID authorization restrictions for reaction targeting.
The vulnerability exists due to missing authorization in the WhatsApp reaction action when handling reaction requests with a forged chatJid and a valid messageId. A remote user can submit a crafted reaction request to bypass JID authorization restrictions for reaction targeting.
The issue is limited to reaction actions in allowFrom-restricted WhatsApp workflows.
Affected software
OpenClaw
How to mitigate CVE-2026-27158
Install security update from vendor's website.
OpenClaw - update to 2026.2.21