CVE-2026-40068 POC (Proof-of-Concept)

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.

Published: 2026-05-05

CVSS: 8.8

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Download CVE-2026-40068 POC (Proof-of-Concept) here:

Tip: Download official Tor Browser at https://www.torproject.org/download/ to access .onion links.

https://hokyo.gr/poc-637-cve-2026-43578/

https://hokyo.gr/poc-750-cve-2026-44244/

https://hokyo.gr/poc-437-cve-2025-71252/

https://hokyo.gr/poc-885-cve-2026-37431/

https://hokyo.gr/poc-5-cve-2026-7513/