CVE-2026-53851
OpenClaw < 2026.5.12 - Slack Reaction Event Notification Bypass
- State
- Published
- Severity
- 6.3 Medium
- Published
- Jun 16, 2026
- Updated
- Jun 16, 2026
- Reserved
- Jun 10, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.3 Medium | 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 | VulnCheck |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | VulnCheck |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
OpenClawOpenClaw |
|
References
- GitHub Security Advisory (GHSA-fcvx-5cxc-v5p8)vendor-advisory
- VulnCheck Advisory: OpenClaw < 2026.5.12 - Slack Reaction Event Notification Bypassthird-party-advisory
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