Improper access control in OpenClaw - CVE-2026-28474
Published: May 4, 2026
Vulnerability identifier: #VU129491
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-28474
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenClaw
Affected software:
OpenClaw
OpenClaw
Detailed vulnerability description
The vulnerability allows a remote user to bypass DM or room allowlists.
The vulnerability exists due to improper access control in the allowlist matching logic when processing Nextcloud Talk webhook payloads. A remote user can change their Nextcloud display name to match an allowlisted user ID to bypass DM or room allowlists.
Only the separately installed optional Nextcloud Talk plugin is affected; core OpenClaw is not impacted unless this plugin is installed and used.
How to mitigate CVE-2026-28474
Install security update from vendor's website.