CyberRota Analysis
AI-GeneratedOpenYak versions prior to 1.1.3 are vulnerable due to a lack of server-side Origin validation and loopback authentication, allowing any webpage to make cross-origin requests to its local server. This critical vulnerability can lead to remote code execution, enabling attackers to execute arbitrary shell commands, shut down the service, and exfiltrate sensitive user data without any user interaction. Organizations using OpenYak should prioritize upgrading to version 1.1.3 to mitigate this severe risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
Note: these links are listed for security research and verification purposes only.
Original NVD Description
OpenYak is a local-first agent runtime for reliable tool-using models, with a desktop workspace built on top. Prior to version 1.1.3, the OpenYak desktop backend binds an HTTP API to `127.0.0.1:<random port>` (commonly 19141) without server-side Origin validation, loopback authentication, or Content-Type enforcement, and with a wildcard CORS policy. Any webpage a user visits while OpenYak is running can issue cross-origin requests to this local server — the browser acts as a proxy into loopback, bypassing OS-level network isolation. Chained, this lets a malicious page execute arbitrary shell commands on the host (RCE) via the build agent with `permission_presets.bash=true`, shut down the service, and exfiltrate chat history and account PII — with no user interaction beyond opening the page. Version 1.1.3 patches the issue.