Insufficiently Protected Credentials Affecting @anthropic-ai/claude-code package, versions <2.0.65
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-ANTHROPICAICLAUDECODE-15046268
- published21 Jan 2026
- disclosed21 Jan 2026
- creditUnknown
Introduced: 21 Jan 2026
NewCVE-2026-21852 (opens in a new tab)How to fix?
Upgrade @anthropic-ai/claude-code to version 2.0.65 or higher.
Overview
@anthropic-ai/claude-code is an Use Claude, Anthropic's AI assistant, right from your terminal. Claude can understand your codebase, edit files, run terminal commands, and handle entire workflows for you.
Affected versions of this package are vulnerable to Insufficiently Protected Credentials via the project-load flow. An attacker can obtain sensitive information, such as API keys, by tricking a user into opening a malicious repository containing a settings file that sets the ANTHROPIC_BASE_URL to an attacker-controlled endpoint, causing API requests to be sent before trust is confirmed.