SecuriTricks - CVE-2026-6357

Description

pip prior to version 26.1 would run self-update check functionality after installing wheel files which required importing well-known Python modules names. These module imports were intentionally deferred to increase startup time of the pip CLI. The patch changes self-update functionality to run before wheels are installed to prevent newly-installed modules from being imported shortly after the installation of a wheel package. Users should still review package contents prior to installation.

Product(s) Impacted

Vendor	Product	Versions
Python	Pip	<26.1

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-829

Inclusion of Functionality from Untrusted Control Sphere

The product imports, requires, or includes executable functionality (such as a library) from a source that is outside of the intended control sphere.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	python	pip	<26.1	/	/	/	/	/	/	/

References

https://github.com/pypa/pip/pull/13923

https://ichard26.github.io/blog/2026/04/whats-new-in-pip-26.1/#security-fixes

http://www.openwall.com/lists/oss-security/2026/04/27/7

CVSS Score

5.3 / 10

CVSS Data - 4.0

Attack Vector: LOCAL
Attack Complexity: LOW
Attack Requirements: PRESENT
Privileges Required: HIGH
User Interaction: ACTIVE
Scope:
Confidentiality Impact: HIGH
Integrity Impact: HIGH
Availability Impact: NONE
Exploit Maturity: NOT_DEFINED

CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

View Vector String

Timeline

Published: April 27, 2026, 3:16 p.m.
Last Modified: April 27, 2026, 11:16 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

CVE-2026-6357