OpenClaw before 2026.3.12 contains an authentication bypass vulnerability in Feishu webhook mode when only verificationToken is configured without encryptKey, allowing acceptance of forged events. Unauthenticated network attackers can inject forged Feishu events and trigger downstream tool execution by reaching the webhook endpoint.
Exploitability
AV:NAC:LAT:NPR:NUI:NVulnerable System
VC:LVI:HVA:LSubsequent System
SC:NSI:NSA:N8.8/CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:NOther