Improper Authentication in OpenClaw - CVE-2026-28465
Published: May 4, 2026
Vulnerability identifier: #VU129504
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-28465
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to spoof webhook events.
The vulnerability exists due to improper authentication in webhook verification in the optional voice-call plugin when processing webhook requests behind certain reverse-proxy or forwarding configurations that accept untrusted forwarded headers. A remote attacker can send specially crafted webhook requests with attacker-controlled forwarded headers to spoof webhook events.
The issue affects only installations where the optional voice-call plugin is installed and enabled.
Affected software
OpenClaw
How to mitigate CVE-2026-28465
Install security update from vendor's website.
OpenClaw - update to 2026.2.3