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Security incidents tagged MCP. Newest first.
› OpenCode AI coding agent (Anomaly) on Windows and WSL
A command-injection flaw in the OpenCode AI coding agent let a malicious or later-hijacked remote MCP server run PowerShell commands on a developer's Windows or WSL machine when they started the MCP OAuth sign-in. The server-supplied authorization endpoint was passed unescaped to an old version of the open package. Anomaly fixed it in 1.18.33 on Sep 28 without a CVE or advisory, so scanners won't flag 1.0.137 through 1.18.32. macOS and Linux are not affected. Pillar Security found it and rates it 9.8; no in-the-wild exploitation reported.
› BerriAI LiteLLM patched
BerriAI LiteLLM contains an improper authentication vulnerability in the MCP Streamable HTTP endpoint that could allow an unauthenticated attacker to establish an authenticated MCP session using an arbitrary Bearer token. Added to CISA KEV on 2026-09-02.
🚨 OpenCode flaw lets malicious MCP servers execute code on Windows and WSL when developers initiate sign-in. Fixed in v1.18.33, but there's no CVE or security advisory. Vulnerability scanners won't flag affected versions. What developers need to know: t.co/l6N4LCjhWt
