OpenClaw versions before 2026.6.5 contain an authentication bypass vulnerability in HTTP Canvas responses that allows lower-trust callers to forge trusted A2UI actions. Attackers can perform actions requiring stronger authorization by submitting crafted requests through configured input paths, bypassing intended policy checks.
Exploitability
AV:NAC:HAT:NPR:NUI:AVulnerable System
VC:NVI:NVA:NSubsequent System
SC:HSI:HSA:N5.1/CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:NOther