CVE-2026-6357

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.

Database specific

{
    "cna_assigner": "PSF",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6357.json"
}

References

Affected packages

Git / github.com/pypa/pip

Affected ranges

Type

GIT

Repo

https://github.com/pypa/pip

Events

Introduced

Fixed

90b2b3e0f7ef75c485155716d904e51654575803

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "26.1"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "26.1"
                }
            ],
            "source": "DESCRIPTION"
        }
    ]
}

Affected versions

0.*

0.3

0.6

0.7

0.7.1

0.8

0.8.2

0.8.3

1.*

1.0

1.2

1.4rc1

1.4rc2

10.*

10.0.0

10.0.1

18.*

18.0

18.1

19.*

19.0

19.0.2

19.1.1

20.*

20.0.2

21.*

21.0

21.3

26.*

26.0

6.*

6.0

9.*

9.0.0

9.0.1

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-6357.json"