CVE-2026-53851Medium· 5.3▾ SunlitOpenClaw: Slack reaction events could ignore reaction notification settings
▾ Sunlit zone — Low / medium · no exploitation signal
impact 29.2 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 4.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via GHSA
0.2%
Slack reaction events could ignore reaction notification settings. In affected versions, a Slack reaction event delivered to the configured app could enter the agent pipeline even when reaction notifications were disabled.
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.
When the affected feature is enabled and reachable, this could trigger unintended agent processing for reaction events. Practical impact depends on the operator's configuration and whether lower-trust input can reach that path.
The first stable patched version is 2026.5.12.
disable or restrict Slack reaction event subscriptions until patched if this path is not needed. 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.
openclaw <= 2026.5.7Upgrade to a patched release:
openclaw 2026.5.12Connected by shared product, vendor, weakness, or advisory.
GHSA-c8w7-9w9h-x69qMedium· 5.3Duplicate Advisory: Slack reaction events could ignore reaction notification settings
GHSA-c29c-2q9c-pc86HighOpenClaw: Slack allowFrom could bind to mutable display names
GHSA-qjpc-qf9m-xwmrHigh· 8.8OpenClaw: Trusted-proxy Control UI WebSocket accepted client-declared scopes before pairing
GHSA-gp79-m99v-gjmhMediumOpenClaw: Mattermost handlers could fall open when channel type was missing
GHSA-w4v6-g3wm-w36cCriticalOpenClaw: QQBot admin commands could skip DM-only and allowFrom policy
GHSA-grc3-2j34-p6gmMediumOpenClaw: message.action forwarding could send Gateway credentials to model-supplied loopback URLs