CVE-2026-48124CWE-829CWE-94

Cursor Desktop sandbox escape via Claude hook configuration

High · published June 15, 2026

CVSS v4.0
8.5
EPSS
0%
Percentile
8.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.5 · HIGH
Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00192 · 8.4th percentile
Weaknesses
CWE-829 · Inclusion of Functionality from Untrusted Control Sphere; CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-06-15T19:56Z
EPSS history
Timeline
  • 15 JUN 19:56Z
    Cursor Desktop sandbox escape via Claude hook configuration
    cvelistv5