CVE-2026-123854

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 36/100
Published: 2026-11-06 Modified: 2026-11-08 First seen: 2026-11-06 Status: active

Attack Surface

Low Complexity No Auth Conf. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Required
S: Unchanged
C: High
I: None
A: None

Description

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

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
JetBrains PyCharm 0 < 2026.3
JetBrains PyCharm 0 < 2026.3
JetBrains PyCharm 0 < 2026.3
JetBrains PyCharm 0 < 2026.3

Bug Bounty Relevance

36 / 100
✓ No authentication
✓ Low complexity

CVSS Score

5.5 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS — Exploitation Probability

0.17%
Raw Score 0.001690
Percentile 6.3%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00169
2026-11-12
0.00169
2026-11-10
0.00169
2026-11-09
0.00169
2026-11-08
0.00169
2026-11-07
0.00169

Intelligence Sources

mitre ref →
nvd ref →