Skip to content
CVE PROGRAM SOURCE RECORD6.3 Medium

CVE-2026-53837

OpenClaw < 2026.5.6 - Missing Channel Type Validation in Mattermost Event Handlers

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

OpenClaw OpenClaw

Default version status: unaffected

  • 0 to < 2026.5.6affected
  • 2026.5.6unaffected
pkg:npm/openclaw

References