A flaw was found in pip, the package installer for Python. A remote attacker can exploit this vulnerability by tricking a victim into installing a malicious Python wheel. This wheel contains specially crafted entry-point names that use directory traversal or absolute paths. This allows pip to write generated script wrappers outside the intended installation directory, leading to arbitrary file overwrite. This can severely impact system integrity and availability, and in certain scenarios, may lead to arbitrary code execution.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

No data.

No data.

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Vendors Products
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Project Subscriptions

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/pypa/pip/commit/8eb178480bd1a2b223f509fc430796b265158dfb cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-8643 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-8643 cve-icon
History

Thu, 28 May 2026 05:45:00 +0000

Type Values Removed Values Added
First Time appeared Pypa
Pypa pip
Vendors & Products Pypa
Pypa pip

Thu, 28 May 2026 00:15:00 +0000

Type Values Removed Values Added
Description A flaw was found in pip, the package installer for Python. A remote attacker can exploit this vulnerability by tricking a victim into installing a malicious Python wheel. This wheel contains specially crafted entry-point names that use directory traversal or absolute paths. This allows pip to write generated script wrappers outside the intended installation directory, leading to arbitrary file overwrite. This can severely impact system integrity and availability, and in certain scenarios, may lead to arbitrary code execution.
Title python-pip: Path traversal via malicious entry point name in pip wheel installation allows arbitrary file overwrite
Weaknesses CWE-22
References
Metrics threat_severity

None

 cvssV3_1

{'score': 8.0, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H'}

threat_severity

Important

Projects

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cve-icon MITRE

No data.

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

Severity : Important

Publid Date: 2026-05-27T17:03:36Z

Links: CVE-2026-8643 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-05-28T05:30:06Z

Weaknesses