OpenClaw < 2026.2.26 - Sender Authorization Bypass in Slack System Event Handlers | Advisories

Advisories

OpenClaw < 2026.2.26 - Sender Authorization Bypass in Slack System Event Handlers

severity: medium
date: 3/20/2026
Affecting: OpenClaw < 2026.2.26
CVE: CVE-2026-32895
CWE: CWE-863 Incorrect Authorization
CVSS: 5.3
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
References: GitHub Security Advisory (GHSA-v8cg-4474-49v8)
Patch Commit
Credit: tdjackey
Description: OpenClaw versions prior to 2026.2.26 fail to enforce sender authorization in member and message subtype system event handlers, allowing unauthorized events to be enqueued. Attackers can bypass Slack DM allowlists and per-channel user allowlists by sending system events from non-allowlisted senders through message_changed, message_deleted, and thread_broadcast events.

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