Anthropic · Claude-Code · CVE-2026-54316
**Name of the Vulnerable Software and Affected Versions**
Claude Code versions 0.2.54 through 2.1.162
**Description**
Claude Code, an agentic coding tool, contains an issue where the hostname `huggingface.co` was pre-approved for the WebFetch tool. This allowed any path on that domain, including attacker-controlled model repositories, to be auto-approved without a permission prompt or being subject to `--allowedTools` restrictions. An attacker capable of injecting untrusted content into the tool's context window could direct it to issue WebFetch requests to attacker-controlled repository files, such as `/resolve/main/config.json`. Because HuggingFace tracks these requests as downloads server-side, it creates a covert out-of-band channel to exfiltrate sensitive data accessible to the tool, including files, environment variables, or command output. This could potentially lead to remote code execution (RCE).
**Recommendations**
Update Claude Code to version 2.1.163 or later.