CVE-2026-40068HIGH 8.8EPSS p19.7%
CVE-2026-40068CVE-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.
Scoring
| CVSS 3.1 | 8.8 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| EPSS | 0.28% probability of exploitation · percentile 19.7% · 2026-06-18T12:00:27Z |
| Published | 2026-05-05 |
| Last modified | 2026-05-12 |
Underlying weaknesses· 2
References
2
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Improper Input Validationcwe-20 | 0% | live |
| Weakness | Improper Neutralization of Special Elements used in a Command ('Command Injection')cwe-77 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.