CVE-2026-53851

OpenClaw < 2026.5.12 - Slack Reaction Event Notification Bypass

CVSS 6.3 MEDIUMEPSS 0.2%CWE-862

OpenClaw before 2026.5.12 contains a notification bypass vulnerability allowing Slack reaction events to enter the agent pipeline despite disabled reaction notifications. Attackers can trigger unintended agent processing by sending reaction events when the feature is enabled, potentially leading to unauthorized processing of lower-trust input.

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Affected products

OpenClaw · OpenClaw

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References

https://github.com/openclaw/openclaw/security/advisories/GHSA-fcvx-5cxc-v5p8 https://www.vulncheck.com/advisories/openclaw-slack-reaction-event-notification-bypass