CVE-2026-6357: Vulnerability in Pip maintainers pip
CVE-2026-6357 is a medium severity vulnerability in pip versions prior to 26. 1 where the self-update check functionality runs after installing wheel files, causing deferred imports of well-known Python modules shortly after installation. The issue was addressed by changing the self-update check to run before wheel installation. Users are advised to review package contents before installation. No official patch or remediation level is confirmed in the provided data.
AI Analysis
Technical Summary
The vulnerability in pip before version 26.1 involves the timing of the self-update check, which was executed after wheel files were installed. This caused deferred imports of well-known Python modules immediately after installation, potentially leading to unintended behavior or security concerns. The fix modifies the self-update process to occur before wheel installation, preventing these module imports from happening post-installation.
Potential Impact
The vulnerability could allow unintended module imports shortly after installing wheel packages, which may affect the security posture of the pip environment. The CVSS 4.0 score of 5.3 (medium severity) reflects a local attack vector requiring high privileges and user interaction, with high impact on confidentiality and integrity. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should ensure they review package contents prior to installation as a precaution. Monitor official pip maintainers' communications for updates or patches addressing this issue.
CVE-2026-6357: Vulnerability in Pip maintainers pip
Description
CVE-2026-6357 is a medium severity vulnerability in pip versions prior to 26. 1 where the self-update check functionality runs after installing wheel files, causing deferred imports of well-known Python modules shortly after installation. The issue was addressed by changing the self-update check to run before wheel installation. Users are advised to review package contents before installation. No official patch or remediation level is confirmed in the provided data.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in pip before version 26.1 involves the timing of the self-update check, which was executed after wheel files were installed. This caused deferred imports of well-known Python modules immediately after installation, potentially leading to unintended behavior or security concerns. The fix modifies the self-update process to occur before wheel installation, preventing these module imports from happening post-installation.
Potential Impact
The vulnerability could allow unintended module imports shortly after installing wheel packages, which may affect the security posture of the pip environment. The CVSS 4.0 score of 5.3 (medium severity) reflects a local attack vector requiring high privileges and user interaction, with high impact on confidentiality and integrity. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should ensure they review package contents prior to installation as a precaution. Monitor official pip maintainers' communications for updates or patches addressing this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- PSF
- Date Reserved
- 2026-04-15T13:55:02.734Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69ef79fcba26a39fba368ba9
Added to database: 4/27/2026, 3:00:12 PM
Last enriched: 4/27/2026, 3:15:31 PM
Last updated: 4/27/2026, 4:10:14 PM
Views: 4
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