Workspace Trust Dialog Bypass via Repo-Controlled Settings File
High7.7CVE-2026-33068 · Published Mar 18, 2026
Claude Code resolved the permission mode from settings files, including the repo-controlled `.claude/settings.json`, before determining whether to display the workspace trust confirmation dialog. A malicious repository could set `permissions.defaultMode` to `bypassPermissions` in its committed `.claude/settings.json`, causing the trust dialog to be silently skipped on first open. This allowed a user to be placed into a permissive mode without seeing the trust confirmation prompt, making it easier for an attacker-controlled repository to gain tool execution without explicit user consent. Users on standard Claude Code auto-update have received this fix already. Users performing manual updates are advised to update to the latest version. Thank you to hackerone.com/cantina_xyz for reporting this issue.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| @anthropic-ai/claude-code npm | < 2.1.53 | 2.1.53 |
Details and references
- CVSS 4.0
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-807
More Anthropic advisories
All Anthropic| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Apr 24 | Trust Dialog Bypass via Git Worktree Spoofing Allows Arbitrary Code Execution | High7.7 | 2.1.84 |
| Apr 20 | Sandbox Escape via Symlink Following Allows Arbitrary File Write Outside Workspace | High7.7 | 2.1.64 |
| Apr 17 | Insecure System-Wide Configuration Loading Enables Local Privilege Escalation on Windows | Medium5.4 | 2.1.75 |
| Mar 31 | Memory Tool Path Validation Race Condition Allows Sandbox Escape | Medium5.8 | 0.87.0 |
| Mar 31 | Insecure Default File Permissions in Local Filesystem Memory Tool | Medium4.8 | 0.87.0 |
| Mar 31 | Memory Tool Path Validation Allows Sandbox Escape to Sibling Directories | Medium6.3 | 0.81.0 |