CVE-2026-114608

Pylint: Arbitrary code execution via pickle deserialization of the stats cache in PYLINT_HOME

Published Oct 22, 2026 CVSS 4.0 · 5.4 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-22qq-2fwx-7p67 Pylint: Arbitrary code execution via pickle deserialization of the stats cache in PYLINT_HOME
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

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

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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Oct 29, 2026, 11:49 AM
Reserved
Oct 21, 2026, 8:34 PM
Status
Deferred
Published
Oct 22, 2026, 5:16 PM
Modified
Oct 29, 2026, 12:17 PM
Severity
Moderate
Public date
Oct 22, 2026, 4:50 PM