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High · 8.5 CVE-2026-48124 EUVD-2026-37002

Cursor Desktop sandbox escape via Claude hook configuration

Published Jun 15, 2026 · Updated Jun 16, 2026 · Assigned by GitHub_M

Description

Cursor is a code editor built for programming with AI. In versions prior to 3.0.0, the Cursor Desktop could execute workspace-defined Claude hook commands from .claude/settings.local.json without dedicated user approval. A malicious workspace or agent-created file could configure hooks that run local commands in the user's context when an agent turn ends. This could allow sandbox escape, persistence across turns, local data access, or follow-on compromise. This issue has been fixed in version 3.0.0.

Affected products

VendorProductAffectedFixed
cursor cursor < 3.0.0 —

References