CVE-2026-40068
Description
In versions 2.1.63 through 2.1.83 of Claude Code, the folder trust determination logic used the git worktree commondir file without validating its contents. An attacker could craft a malicious repository with a commondir file pointing to a path the victim had previously trusted, causing Claude Code to bypass its trust confirmation dialog and immediately execute hooks defined in `.claude/settings.json`. Exploitation requires the victim to clone the malicious repository and run Claude Code within it, and the attacker must know or guess a path the victim had already trusted. This issue has been fixed in version 2.1.84.
How to fix
- anthropic claude_code2.1.84 or later
- @anthropic-ai/claude-code2.1.84 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| anthropic claude_code | 2.1.63 ≤ v < 2.1.84 | 2.1.84 |
| @anthropic-ai/claude-codenpm | 2.1.63 ≤ v < 2.1.84 | 2.1.84 |
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