CVE-2026-6357Disclosure

LOWCVSS 5.3 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD 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.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-829

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Threat summary

  • Patch or workaround signal is available
  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 3 signals
  • Disclosure: 2 classified signals
  • General: 1 classified signal
  • Peaked 1d ago at 2 mentions (2026-04-27); latest day: 1
  • 3 total mentions across 2 days

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-04-27: 2Mentions · 2026-04-28: 1Patch / Workaround · 2026-04-27: 1Technical Details · 2026-04-27: 2Technical Details · 2026-04-28: 104-2704-28
Signal classification2 categories
Disclosure
266.7%
General
133.3%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-04-272
Disclosure1General1
2026-04-281
Disclosure1
Full discourse3 posts
  • Open Source Security mailing list@oss_security
    Disclosure

    CVE-2026-6357: pip: Self-update functionality can import newly installed modules after wheel installation https://www.openwall.com/lists/oss-security/2026/04/27/7

    Post summary

    The text announces CVE-2026-6357 on pip, describing that its self-update process can import modules installed via wheel, but provides no PoC, exploit code, patch information, or evidence of active exploitation.

    00030287
    4.7K followersView on X
  • CVE@CVEnew
    General

    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 … https://www.cve.org/CVERecord?id=CVE-2026-6357

    Post summary

    The post describes a pip vulnerability that triggers a self‑update check after installing wheel files, potentially importing known Python modules; no PoC, exploit, or patch is mentioned.

    0000077
    57.3K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-6357 Deferred Module Import Vulnerability in pip Prior to Version 26.1 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-6357

    Post summary

    This entry announces CVE-2026-6357, a deferred module import vulnerability impacting pip versions before 26.1, and directs readers to a vulnerability details page.

    0000034
    4.0K followersView on X

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