CVE-2026-53851 Details
Description
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.
A notification bypass vulnerability has been identified in OpenClaw versions prior to 2026.5.12. This vulnerability allows Slack reaction events to be processed by the agent pipeline, even when reaction notifications are disabled. Attackers could exploit this by sending reaction events, potentially leading to unauthorized handling of lower-trust input.
Users can update to OpenClaw version 2026.5.12 or later to address this vulnerability. If an immediate update is not possible, reaction event subscriptions can be disabled or restricted until the patch is applied.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 16, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/openclaw/openclaw/security/advisories/GHSA-fcvx-5cxc-v5p8 | [email protected] | Vendor Advisory |
| https://www.vulncheck.com/advisories/openclaw-slack-reaction-event-notification-bypass | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-862 | Missing Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| openclaw openclaw | < 2026.5.12 2026.5.12 beta1 2026.5.12 beta2 2026.5.12 beta3 2026.5.12 beta4 2026.5.12 beta5 2026.5.12 beta6 2026.5.12 beta7 2026.5.12 beta8 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 16, 2026 | New CVE Received | [email protected] |