Arbitrary Command Injection Affecting @anthropic-ai/claude-code package, versions >=2.1.63 <2.1.84
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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- published27 Apr 2026
- disclosed24 Apr 2026
- creditMasato Anzai
Introduced: 24 Apr 2026
NewCVE-2026-40068 (opens in a new tab)How to fix?
Upgrade @anthropic-ai/claude-code to version 2.1.84 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 Arbitrary Command Injection via the commondir handling process. An attacker can execute arbitrary code by crafting a malicious repository with a commondir file that points to a previously trusted path, thereby bypassing the trust dialog and triggering malicious hooks in .claude/settings.json.
Note: This is only exploitable if the victim clones the malicious repository, runs the application within it, and the attacker knows or guesses a path the victim has already trusted.