CVE-2026-53837

Low

Description

OpenClaw before 2026.5.6 contains an improper access control vulnerability in Mattermost event handlers that fails to validate channel type metadata. Attackers can bypass intended DM policy decisions by sending crafted Mattermost events missing channel type information to process restricted content.

SeverityLow

CVSS3.7

Exploit probability—

ProductOpenclaw

PublishedJun 12, 2026

First seenJun 12, 2026

Weakness typeCWE-636CWE-636

How to fix

Update

openclaw openclaw2026.5.6 or later
openclaw2026.5.6 or later

Vendor advisories

github.com/openclaw/openclaw/security/advisories/GHSA-gp79-m99v-gjmh

Affected products

Product	Affected versions	Fixed in
openclaw openclaw	v < 2026.5.6	2026.5.6
openclawnpm	v < 2026.5.6	2026.5.6

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.