Insufficient verification of data authenticity in OpenClaw - #VU135898
Published: June 30, 2026
Vulnerability identifier: #VU135898
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: N/A
CWE-ID: CWE-345
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenClaw
Affected software:
OpenClaw
OpenClaw
Detailed vulnerability description
The vulnerability allows a remote attacker to perform unauthorized actions.
The vulnerability exists due to insufficient verification of data authenticity in the HTTP Canvas response handling for trusted A2UI actions when processing lower-trust caller input or configured input paths. A remote attacker can provide a specially crafted response or input path to perform unauthorized actions.
Exploitation requires the affected feature to be enabled and reachable, and practical impact depends on whether lower-trust input can reach the affected path. User interaction is required.
Remediation
Install security update from vendor's website.