CVE-2026-73217Network attack vector

Host command execution via tampered Python interpreter

Published Aug 11, 2026 · Updated Aug 11, 2026

Sandbox escape in Cursor before 3.1.2 allows remote attackers to execute arbitrary host commands on macOS through Auto-Run Sandbox mode. The Microsoft Python extension invokes a virtual environment's agent-replaced Python executable outside the sandbox, so a malicious wrapper runs on the host. Exploitation requires agent control in Auto-Run Sandbox mode and a subsequent interpreter invocation; commands run with the user's privileges and can alter files or launch applications.

CVSS severity7.7
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sandbox escape in Cursor before 3.1.2 allows remote attackers to execute arbitrary host commands on macOS through Auto-Run Sandbox mode. The Microsoft Python extension invokes a virtual environment's agent-replaced Python executable outside the sandbox, so a malicious wrapper runs on the host. Exploitation requires agent control in Auto-Run Sandbox mode and a subsequent interpreter invocation; commands run with the user's privileges and can alter files or launch applications.

The record

CVE
CVE-2026-73217
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
Anysphere
Product
Cursor
Classifications
CWE-693, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 3.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Anysphere · Cursorversion=< 3.1.2

Published CVSS scores

7.7GitHub, Inc.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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-693Protection Mechanism Failure
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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