Incorrect authorization in OpenClaw - CVE-2026-32899
Published: May 1, 2026
Vulnerability identifier: #VU128766
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-32899
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenClaw
Affected software:
OpenClaw
OpenClaw
Detailed vulnerability description
The vulnerability allows a remote attacker to introduce unauthorized reaction or pin context signals.
The vulnerability exists due to incorrect authorization in Slack non-message event handlers when processing reaction_* and pin_* events before applying sender-policy checks consistently. A remote attacker can send unauthorized non-message events to introduce unauthorized reaction or pin context signals.
The issue affects system-event context for non-message Slack ingress.
How to mitigate CVE-2026-32899
Install security update from vendor's website.