HighVulnerability

CVE-2026-73217: Cursor IDE for macOS sandbox escape via Python venv replacement

Source: NVD(opens in a new tab)
Identifier: CVE-2026-73217
Published: August 11, 2026
Record updated: October 9, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.4%

Summary

CVE-2026-73217 affects Cursor IDE for macOS before 3.1.2. An agent running in Auto-Run Sandbox mode can replace a virtual environment's Python executable with a malicious wrapper, which the Microsoft Python extension invokes outside the sandbox. This allows arbitrary host commands with the user's privileges, including modifying files outside the workspace and launching applications. The CVSS 4.0 base score from GitHub, Inc. is 7.7 (HIGH), and the weakness is CWE-693.

Mitigation

Fixed in version 3.1.2.

Details

Scores and exploitation

EPSS: 0.4%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on November 12, 2026.
Disclosure date: August 11, 2026

Weaknesses and techniques

Weakness (CWE): CWE-693

Affected

Vendors: Anthropic

Classification

Attack type: Other
Attack sophistication: Moderate
AI component targeted: Agent
Impact: Confidentiality,
Integrity,
Availability
Labels: security,
industry

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-73217

First tracked: August 11, 2026 at 08:08 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 85% (self-assessed)

Summary

Mitigation

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