CVE-2026-49384

Stored XSS Vulnerability in PyCharm Jupyter Notebook Markdown Cells

Published May 29, 2026 CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Description
In JetBrains PyCharm before 2025.3.4 stored XSS in Jupyter notebook Markdown cells was possible

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:jetbrains:pycharm:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Jetbrains
Jetbrains pycharm
Vendors & Products Jetbrains
Jetbrains pycharm
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Stored XSS Vulnerability in PyCharm Jupyter Notebook Markdown Cells
Type Values Removed Values Added
Description In JetBrains PyCharm before 2025.3.4 stored XSS in Jupyter notebook Markdown cells was possible
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
JetBrains
Published
Updated
May 29, 2026, 7:27 PM
Reserved
May 29, 2026, 6:07 PM
Status
Analyzed
Published
May 29, 2026, 7:16 PM
Modified
Jul 22, 2026, 6:10 AM