In JetBrains PyCharm before 2026.3 code execution was possible in Safe Mode via a crafted Jupyter notebook widget module
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Fixes

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Workaround

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History

Fri, 06 Nov 2026 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Jetbrains
Jetbrains pycharm
Vendors & Products Jetbrains
Jetbrains pycharm

Fri, 06 Nov 2026 18:45:00 +0000

Type Values Removed Values Added
Title PyCharm Safe Mode Code Execution via Jupyter Widget Module

Fri, 06 Nov 2026 16:30:00 +0000

Type Values Removed Values Added
Description In JetBrains PyCharm before 2026.3 code execution was possible in Safe Mode via a crafted Jupyter notebook widget module
Weaknesses CWE-829
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: JetBrains

Published:

Updated: 2026-11-06T16:46:29.111Z

Reserved: 2026-11-06T16:05:47.709Z

Link: CVE-2026-123854

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-06T17:17:24.577

Modified: 2026-11-06T20:20:05.730

Link: CVE-2026-123854

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-06T20:00:10Z

Weaknesses