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CVE Record

CVE-2026-8643: pip can extract console_scripts and gui_scripts outside installation directory

pip would treat console_scripts and gui_scripts as paths instead of file names without sanitizing the resolved absolute path to the installation directory, leading to entry points being installed outside the installation directory.

HighCVSS 8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2026-8643 is a high-severity pip flaw where crafted package entry-point script names could be installed outside the intended installation directory. This matters most where developers, CI systems, or automation install Python packages from untrusted or compromised sources.

Executive priority

Treat as high priority for engineering and build environments because compromise of package installation workflows can affect code integrity and developer systems. No source in the bundle confirms active exploitation.

Technical view

pip 24.0 improperly treated console_scripts and gui_scripts as paths rather than sanitized filenames. The CVE maps to CWE-22 and carries CVSS 3.1 score 8.0 with user interaction and low privileges required. Source evidence identifies pip 24.0 and vendor/distribution advisories, but no active exploitation evidence is provided.

Likely exposure

Exposure is most likely on developer workstations, CI runners, build containers, and servers using pip 24.0 to install Python packages, especially from public indexes or less-controlled internal feeds.

Exploitation context

The bundle does not show KEV listing or confirmed active exploitation. Risk depends on a vulnerable pip 24.0 installation processing a malicious or compromised package with crafted entry points.

Researcher notes

Focus analysis on pip entry-point generation for console_scripts and gui_scripts and path containment around installation directories. Evidence is limited to the CVE record, PyPA patch reference, Python advisory, and Red Hat advisories.

Mitigation direction

  • Inventory systems and build images for pip 24.0.
  • Apply patched pip or distribution updates from official vendor guidance.
  • Prioritize CI, developer endpoints, and package-build infrastructure.
  • Restrict package installation to trusted sources until patched.
  • Review Red Hat advisories where Red Hat packages are used.

Validation and detection

  • Confirm pip 24.0 is absent from active runtimes and build images.
  • Check vendor package changelogs or advisories for CVE-2026-8643 coverage.
  • Verify CI runners and container bases were rebuilt after updates.
  • Review dependency sources for untrusted or unexpected package indexes.
Prepared
Confidence
medium
Sources
8

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-22: File access and web shell behavior lookup

File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2026-8643 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
High
CVSS
8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

2CVSS vectors
5Timeline events
3ADP providers
38Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

2 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
8CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H2.15.9redhat-SADP
4.1CVSS 4.0MediumCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N——PSF

Vulnerability scoring details

Base CVSS 4.0 score

4.1Medium
CVSS 4.0 vector shape for CVE-2026-8643Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Attack Requirements
NonePresent
Privileges Required
NoneLowHigh
User Interaction
NonePassiveActive
VS Confidentiality
HighLowNone
VS Integrity
HighLowNone
VS Availability
HighLowNone
SS Confidentiality
HighLowNone
SS Integrity
HighLowNone
SS Availability
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. ADP timelineredhat-SADP

    Reported to Red Hat.

  2. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  3. ADP timelineredhat-SADP

    Made public.

  4. CVE publishedCVE Program

    The CVE record was published.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc
redhat-SADPpython-pip: Path traversal via malicious entry point name in pip wheel installation allows arbitrary file overwrite
other:Red Hat severity ratingcvssV3_1
  • 2026-04-22T23:09:35.000Z: Reported to Red Hat.
  • 2026-05-27T17:03:36.585Z: Made public.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Python Packaging Authoritypippip, 24.0unaffected
Weakness

CWE details

CWE-22

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-22 · source CWE mapping

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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