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**
The WebFetch tool pre-approved the hostname 'huggingface.co' as a bare hostname, allowing any path on that domain to be auto-approved without a permission prompt or restrictions from `--allowedTools`. An attacker capable of injecting untrusted content into the context window could direct the tool to make requests to attacker-controlled repository files, such as '/resolve/main/config.json'. Since HuggingFace records these as server-side downloads, this creates a covert out-of-band channel to exfiltrate sensitive data, including files, environment variables, or command output.
**Recommendations**
Update to version 2.1.163.