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CVE-2026-114608— Pylint: Arbitrary code execution via pickle deserialization of the stats cache in PYLINT_HOME

Quick assessment

Affected
pylint-dev pylint
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Pylint 是用于 Python 的静态代码分析工具。在 0.15.2 至 4.0.9 版本中，Pylint 会将模块统计信息存储在 PYLINT_HOME 下可预测的文件中，并在后续运行时使用 pickle.load 加载这些文件。如果攻击者能够向共享的、组可写的或其他不可信的缓存目录写入数据，就可以用精心构造的序列化数据替换统计缓存，从而在下次运行 Pylint 的用户权限下执行任意代码。默认情况下，每个用户的缓存目录通常不可被其他用户写入。该问题已在 4.0.9 版本中修复。

CVSS 5.4 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
pylint-dev pylint < 4.0.9 affected
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I. Basic Information for CVE-2026-114608

Vulnerability Information
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Vulnerability Title
Pylint: Arbitrary code execution via pickle deserialization of the stats cache in PYLINT_HOME
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
pylint-dev pylint < 4.0.9 -

II. Public POCs for CVE-2026-114608

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III. Intelligence Information for CVE-2026-114608

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Patches & Fixes for CVE-2026-114608 (1)

Vendor Advisories for CVE-2026-114608 (1)

Vendor Pages for CVE-2026-114608 (1)

IV. Related Vulnerabilities

Same weakness: CWE-502

V. Comments for CVE-2026-114608

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