Bug 2566009

Summary: CVE-2026-114608 pylint: pylint: Arbitrary code execution via untrusted cache deserialization [epel-10]
Product: [Fedora] Fedora EPEL Reporter: Oleg Sushchenko <osushche>
Component: pylintAssignee: Orion Poplawski <orion>
Status: ON_QA --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: epel10CC: gwync, orion
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["7129f318-e0ba-487d-8a39-c1f01e5408ff"]}
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2559159    

Description Oleg Sushchenko 2026-11-03 17:27:19 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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.
Comment 1 Fedora Update System 2026-11-04 22:57:46 UTC 
FEDORA-EPEL-2026-1bf9f2a209 (pylint-3.3.9-3.el10_4) has been submitted as an update to Fedora EPEL 10.4.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-1bf9f2a209
Comment 2 Fedora Update System 2026-11-05 02:49:40 UTC 
FEDORA-EPEL-2026-1bf9f2a209 has been pushed to the Fedora EPEL 10.4 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-1bf9f2a209

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.