medium5.4
CVE-2026-114608
Pylint: Arbitrary code execution via pickle deserialization of the stats cache in PYLINT_HOME
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | pylint | < 4.0.9 | 4.0.9 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-22qq-2fwx-7p67
- https://github.com/pylint-dev/pylint/security/advisories/GHSA-22qq-2fwx-7p67
- https://nvd.nist.gov/vuln/detail/CVE-2026-114608
- https://github.com/pylint-dev/pylint/commit/58c87cffca9de2b3e89aa07b89686cbc90cfea2d
- https://github.com/pylint-dev/pylint/commit/5b241f66318220e9ba7b21ca631fbfe8e77682ca
- https://github.com/pylint-dev/pylint/releases/tag/v4.0.9