CVE-2026-114608 Details
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.
A vulnerability allowing arbitrary code execution has been identified in Pylint, a static code analyzer for Python. This issue affects Pylint versions 0.15.2 prior to 4.0.9. The vulnerability arises because Pylint stores module statistics in predictable files within the PYLINT_HOME directory. These files are loaded using pickle, a Python serialization format that can execute arbitrary code when deserialized. An attacker with write access to a shared, group-writable, or otherwise untrusted cache directory can replace a stats cache file with a crafted version, leading to code execution with the privileges of the user running Pylint.
Users should upgrade to Pylint version 4.0.9 or later, and avoid pointing the PYLINT_HOME environment variable to an untrusted, shared, or group-writable directory.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 22, 2026CISA-ADP
Assessed Oct 29, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/pylint-dev/pylint/commit/58c87cffca9de2b3e89aa07b89686cbc90cfea2d | [email protected] | Source CodeVendor |
| https://github.com/pylint-dev/pylint/commit/5b241f66318220e9ba7b21ca631fbfe8e77682ca | [email protected] | Source CodeVendor |
| https://github.com/pylint-dev/pylint/releases/tag/v4.0.9 | [email protected] | Release NotesVendor |
| https://github.com/pylint-dev/pylint/security/advisories/GHSA-22qq-2fwx-7p67 | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-502 | Deserialization of Untrusted Data | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Pylint | < 4.0.9 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 29, 2026 | CVE Modified | CISA-ADP |
| Oct 22, 2026 | New CVE Received | [email protected] |