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CVE-2026-73218— Cursor: Sandbox escape via launching privileged containers

Quick assessment

Affected
cursor cursor
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cursor是Cursor组织的一款深度集成AI的智能代码编辑器。 Cursor 3.0.0之前版本存在权限许可和访问控制问题漏洞，该漏洞源于Auto-Run Sandbox模式下的权限管理不当，允许代理启动特权容器并挂载Docker的virtiofs0，导致攻击者可读写用户主目录并以用户权限执行主机命令。

CVSS 7.7 · High EPSS 0.82% · P55

Possible ATT&CK Techniques 1 AI

T1610 · Deploy Container

Affected Version Matrix 1

VendorProduct Version RangeStatus
cursor cursor < 3.0.0 affected
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I. Basic Information for CVE-2026-73218

Vulnerability Information
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Vulnerability Title
Cursor: Sandbox escape via launching privileged containers
Source: CVE Program / CVE List V5
Vulnerability Description
Cursor is a code editor built for programming with AI. Prior to 3.0.0, Cursor IDE for macOS allows an agent running in Auto-Run Sandbox mode, when Docker Desktop and the Dev Containers CLI are installed, to launch a privileged container and mount Docker's virtiofs0, granting read and write access to the user's home directory and enabling host command execution with the user's privileges without an additional permission prompt. This issue is fixed in version 3.0.0.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cursor 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cursor是Cursor组织的一款深度集成AI的智能代码编辑器。 Cursor 3.0.0之前版本存在权限许可和访问控制问题漏洞，该漏洞源于Auto-Run Sandbox模式下的权限管理不当，允许代理启动特权容器并挂载Docker的virtiofs0，导致攻击者可读写用户主目录并以用户权限执行主机命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
cursor cursor < 3.0.0 -

II. Public POCs for CVE-2026-73218

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6611 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-73218

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Vendor Advisories for CVE-2026-73218 (1)

IV. Related Vulnerabilities

Same product: cursor
Same vendor: cursor
Same weakness: CWE-269

V. Comments for CVE-2026-73218

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