CVE-2026-53851

Medium

Description

OpenClaw before 2026.5.12 contains a notification bypass vulnerability allowing Slack reaction events to enter the agent pipeline despite disabled reaction notifications. Attackers can trigger unintended agent processing by sending reaction events when the feature is enabled, potentially leading to unauthorized processing of lower-trust input.

SeverityMedium

CVSS5.3

Exploit probability—

ProductOpenclaw

PublishedJun 16, 2026

First seenJun 16, 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-fcvx-5cxc-v5p8

Affected products

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

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.