CVE-2026-49384

MEDIUM

Jetbrains PyCharm < 2025.3.4 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Title source: rule
STIX 2.1

Description

In JetBrains PyCharm before 2025.3.4 stored XSS in Jupyter notebook Markdown cells was possible

References (1)

Core 1

Scores

CVSS v3 6.1
EPSS 0.0018
EPSS Percentile 7.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (2)
JetBrains/PyCharm < 2025.3.4
jetbrains/pycharm < 2025.3.4
Published May 29, 2026
Tracked Since May 30, 2026