OpenCode — Vulnerability (CVE-2026-22812)
Date: 2026-01
Affected: anoma/opencode
Attack vector: auth-bypass
Category: vulnerability-disclosure
Severity: High
CVE: CVE-2026-22812
CWE: CWE-306
CWE-749
CWE-942
CVSS: 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)

OpenCode is an open source AI coding agent. Prior to 1.0.216, OpenCode automatically starts an unauthenticated HTTP server that allows any local process (or any website via permissive CORS) to execute arbitrary shell commands with the user's privileges. This vulnerability is fixed in 1.0.216.


Mitigations:

Architectural layers (MAESTRO):