What’s Vulnerable › Vulnerabilities

CVE-2026-49384

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-29 · updated 2026-07-22
• Weakness: CWE-79

Description

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

Affected products

• JetBrains PyCharm: before 2025.3.4 — fixed in 2025.3.4

How to fix

Upgrade to a fixed version: JetBrains PyCharm 2025.3.4. Check the vendor advisory for mitigations.

References

• https://www.jetbrains.com/privacy-security/issues-fixed/

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