Security Advisory

CVE-2026-22813

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-01-12 22:52:35
Last updated 2026-01-13 19:07:23
Assigner GitHub_M
CVSS score 9.4
State PUBLISHED

Description

OpenCode is an open source AI coding agent. The markdown renderer used for LLM responses will insert arbitrary HTML into the DOM. There is no sanitization with DOMPurify or even a CSP on the web interface to prevent JavaScript execution via HTML injection. This means controlling the LLM response for a chat session gets JavaScript execution on the http://localhost:4096 origin. This vulnerability is fixed in 1.1.10.