CVE-2025-61260

Critical severity, CVSS 9.8. EPSS: 6.6% chance of exploitation in the next 30 days.

A vulnerability was identified in OpenAI Codex CLI v0.23.0 and before that enables code execution through malicious MCP (Model Context Protocol) configuration files. The attack is triggered when a user runs the codex command inside a malicious or compromised repository. Codex automatically loads project-local .env and .codex/config.toml files without requiring user confirmation, allowing attackers to embed arbitrary commands that execute immediately.

Published 2026-04-14. Last modified 2026-07-05.