CVE-2026-53837

描述

### Summary Mattermost handlers could fall open when channel type was missing. In affected versions, a Mattermost event missing channel type metadata could continue without applying the intended DM policy decision. This advisory is scoped to the named feature and configuration. It does not change OpenClaw's trusted-operator model: authenticated Gateway operators, installed plugins, and intentional local execution surfaces remain trusted unless a separate policy, approval, allowlist, sandbox, or auth boundary is crossed. ### Impact When the affected feature is enabled and reachable, this could process a Mattermost event that should have been gated by channel policy. Practical impact depends on the operator's configuration and whether lower-trust input can reach that path. ### Patched Versions The first stable patched version is `2026.5.6`. ### Mitigations keep Mattermost bot access restricted and review channel metadata errors until patched. As general hardening, keep channel and tool allowlists narrow, avoid sharing one Gateway between mutually untrusted users, and disable the affected feature when it is not needed.

如何修補 CVE-2026-53837

要修補 CVE-2026-53837,請將受影響套件升級到下列已修補版本。

• —升級至 2026.5.6 或更新版本

CVE-2026-53837 正在被利用嗎?

低 — EPSS 為 0.2%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• from 0, < 2026.5.6

CVSS 分數

參考連結(2)

• PATCHgithub.com/openclaw/openclaw
• WEBgithub.com/openclaw/openclaw/security/advisories/GHSA-gp79-m99v-gjmh