Vulnerability · Published Jun 15, 2026 · Assigned by GitHub_M

CVE-2026-48124Cursor Desktop sandbox escape via Claude hook configuration

High 8.5

In plain English

A high-severity code injection in cursor from cursor. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities).

Severity (CVSS 4.0)8.5High

Exploit odds (30 days)0.1%top 96.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
cursor	cursor	< 3.0.0

Weakness: CWE-829, CWE-94 · 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

References

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