CVE-2026-53820 MEDIUM

CVE-2026-53820: OpenClaw < 2026.5.12 - Exec Denylist Bypass in Bundle MCP Loopback Session Spawn

Vendor Openclaw
Product OpenClaw
Weakness CWE-862 · Missing authorization
Published June 12, 2026
Last update June 15, 2026
View on NVD All CVEs

CVSS base score

6.9/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N

What the vulnerability does

01Description

OpenClaw before 2026.5.12 contains an exec denylist bypass vulnerability in the bundle MCP loopback session-spawn path that allows authenticated callers to bypass intended command restrictions. Attackers can reach the affected bundled MCP session-spawn path to start sessions with broader command reach than intended.

Key dates

02Disclosure timeline

June 12, 2026 CVE published
June 15, 2026 Record updated