Pylint is a static code analyser for Python. From 0.15.2 until 4.0.9, Pylint stores module statistics in predictable files under PYLINT_HOME and loads those files with pickle.load on a later run. An attacker who can write to a shared, group-writable, or otherwise untrusted cache directory can replace a stats cache with crafted serialized data, causing arbitrary code to execute with the privileges of the user who next runs Pylint. The default per-user cache is not normally writable by another user. This issue is fixed in version 4.0.9.

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Fixes

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History

Fri, 23 Oct 2026 00:45:00 +0000

Type Values Removed Values Added
First Time appeared Pylint-dev
Pylint-dev pylint
Vendors & Products Pylint-dev
Pylint-dev pylint
References
Metrics threat_severity

None

cvssV3_1

{'score': 6.7, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H'}

threat_severity

Moderate


Thu, 22 Oct 2026 17:00:00 +0000

Type Values Removed Values Added
Description Pylint is a static code analyser for Python. From 0.15.2 until 4.0.9, Pylint stores module statistics in predictable files under PYLINT_HOME and loads those files with pickle.load on a later run. An attacker who can write to a shared, group-writable, or otherwise untrusted cache directory can replace a stats cache with crafted serialized data, causing arbitrary code to execute with the privileges of the user who next runs Pylint. The default per-user cache is not normally writable by another user. This issue is fixed in version 4.0.9.
Title Pylint: Arbitrary code execution via pickle deserialization of the stats cache in PYLINT_HOME
Weaknesses CWE-502
References
Metrics cvssV4_0

{'score': 5.4, 'vector': 'CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-22T16:50:02.569Z

Reserved: 2026-10-21T20:34:25.599Z

Link: CVE-2026-114608

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-22T17:16:58.750

Modified: 2026-10-22T17:40:46.877

Link: CVE-2026-114608

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-22T16:50:02Z

Links: CVE-2026-114608 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-22T21:19:01Z

Weaknesses