CVE catalog
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 defer
- Severity
- Medium · CVSS 5.8
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.14% · Oct 27, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | python-pip | sid | 26.2.2+dfsg-1 | fixed |
| Debian | python-pip | forky | 26.2.2+dfsg-1 | fixed |
| Debian | python-pip | trixie | 25.1.1+dfsg-1 | vulnerable |
| Debian | python-pip | bookworm | 23.0.1+dfsg-1 | vulnerable |
| Cpe | python-pip | Not reported | Not reported | vulnerable |
| PyPI | pip | Not reported | 26.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python-pip | source | sid | 26.1.1+dfsg-1 | not yet assigned | Not reported | [1135110] |
| Debian | python-pip | source | forky | 26.1.1+dfsg-1 | not yet assigned | Not reported | [1135110] |
| Debian | python-pip | source | trixie | (unfixed) | not yet assigned | Not reported | [1135110] |
| Debian | python-pip | source | bookworm | (unfixed) | not yet assigned | Not reported | [1135110] |
| PyPI | pip | PyPI | Not reported | 26.1 | Not reported | GHSA-JP4C-XJXW-MGF9 | Not reported |
Notes
[trixie] python-pip: Minor issue [bookworm] python-pip: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [python3-pip]Affected
Source package: [python-pip]
Details (2)
23.0.1+dfsg-1· all · bookwormAffected
nvd · python-pip · debian · bookworm; nvd · python-pip · debian · 12
23.0.1+dfsg-1· all · bookwormAffected
nvd · python-pip · debian · bookworm; nvd · python-pip · debian · 12
- [python3-pip-whl]Affected
Source package: [python-pip]
Details (2)
23.0.1+dfsg-1· all · bookwormAffected
nvd · python-pip · debian · bookworm; nvd · python-pip · debian · 12
23.0.1+dfsg-1· all · bookwormAffected
nvd · python-pip · debian · bookworm; nvd · python-pip · debian · 12
[Debian 13 (Trixie)]
- [python3-pip]Affected
Source package: [python-pip]
Details (2)
25.1.1+dfsg-1· all · trixieAffected
nvd · python-pip · debian · 13
25.1.1+dfsg-1· all · trixieAffected
nvd · python-pip · debian · 13
- [python3-pip-whl]Affected
Source package: [python-pip]
Details (2)
25.1.1+dfsg-1· all · trixieAffected
nvd · python-pip · debian · 13
25.1.1+dfsg-1· all · trixieAffected
nvd · python-pip · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_22018-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-6357]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-6357]
- [https://osv.dev/vulnerability/GHSA-jp4c-xjxw-mgf9]
- [https://security-tracker.debian.org/tracker/CVE-2026-6357]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6357.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2455.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]