Description
In JetBrains PyCharm before 2026.2.1 code execution was possible via unauthenticated Jupyter MCP tools
Affected products
jetbrains: pycharm
References1
- www.jetbrains.com/privacy-security/issues-fixed/ Vendor Advisory
Metrics
- CVSS 3.1
-
8.4
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 8 · as of 11 November 2026
- CWE
- CWE-306
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.