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Vulnerability record · CVE-2026-49384 · published 29 May 2026

CVE-2026-49384: Jetbrains pycharm cross-site scripting vulnerability

Jetbrains · Pycharm

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

6.1 CVSS 3.1 Medium EPSS 0.25% · top 84.9% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score
0.25%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
22 Jul 2026Last modified by NVD

Description

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.jetbrains.com/privacy-security/issues-fixed/ Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-49384), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.