CVE-2026-53820

Medium

Description

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.

SeverityMedium

CVSS6.6

Exploit probability—

ProductOpenclaw

PublishedJun 12, 2026

First seenJun 12, 2026

Weakness typeCWE-862Missing authorization

How to fix

Update

openclaw openclaw2026.5.12 or later
openclaw2026.5.12 or later

Vendor advisories

github.com/openclaw/openclaw/security/advisories/GHSA-qh2f-99mv-mrcf

Affected products

Product	Affected versions	Fixed in
openclaw openclaw	v < 2026.5.12	2026.5.12
openclawnpm	v < 2026.5.12	2026.5.12

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