CVE-2026-53851
MEDIUMOpenClaw < 2026.5.12 - Slack Reaction Event Notification Bypass
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-fcvx-5cxc-v5p8)
https://github.com/openclaw/openclaw/security/advisories/GHSA-fcvx-5cxc-v5p8
Third Party Advisory third-party-advisory
VulnCheck Advisory: OpenClaw < 2026.5.12 - Slack Reaction Event Notification Bypass
https://www.vulncheck.com/advisories/openclaw-slack-reaction-event-notification-bypass
Scores
CVSS v3
5.3
EPSS
0.0019
EPSS Percentile
9.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-862
Status
published
Products (5)
npm/openclaw
0 - 2026.5.12npm
openclaw/openclaw
2026.5.12 beta1 (8 CPE variants)
OpenClaw/OpenClaw
< 2026.5.12
openclaw/openclaw
< 2026.5.12
OpenClaw/OpenClaw
2026.5.12
Published
Jun 16, 2026
Tracked Since
Jun 17, 2026