CVE-2026-53837 — OpenClaw < 2026.5.6 - Missing Channel Type Validation in Mattermost Event Handlers
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 intend…
Published: 2026-06-12 · CVSS: 6.3 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7