CVE-2026-48124

Cursor Desktop sandbox escape via Claude hook configuration

HIGH

8.5

CVSS Score

Published: June 15, 2026 at 07:56 PM UTC

Updated: June 17, 2026 at 10:54 AM UTC

1 product affected across 1 vendorCursor

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Severity

HIGH8.5

Exploit prediction

EPSS 0.1%

SSVC

No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Cursor · Cursor

60%

v < 3.0.0

Affected range stops below 3.0.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_CONFIRM

Source: cverecord

https://github.com/cursor/cursor/security/advisories/GHSA-pc9j-3qc2-95wv

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.5HIGHGitHub_M

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-829CWE-94

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