{
  "cveId": "CVE-2026-49384",
  "url": "https://patchblox.com/security/cve/CVE-2026-49384",
  "summary": "CVE-2026-49384 is fixed in PyCharm on 1 platform by PyCharm 2025.3.4 (version 2025.3.4), released March 25, 2026. 4 other affected products have no fix yet. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "PyCharm Professional Edition and 2 others: In JetBrains PyCharm before 2025.3.4 stored XSS in Jupyter notebook Markdown cells was possible",
  "description": "In JetBrains PyCharm before 2025.3.4 stored XSS in Jupyter notebook Markdown cells was possible",
  "published": "2026-05-29T19:16:28Z",
  "severity": "",
  "cvss": 6.1,
  "cwe": "CWE-79",
  "epss": 0.00181,
  "epssPercentile": 0.07728,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://nvd.nist.gov/vuln/detail/CVE-2026-49384",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "PyCharm",
      "fixedVersion": "2025.3.4",
      "fix": "PyCharm 2025.3.4",
      "url": "https://patchblox.com/security/fix/windows-app/jetbrains.pycharm-2025.3.4",
      "released": "2026-03-25T00:00:00Z"
    }
  ],
  "noFixYet": [
    {
      "platform": "Windows apps",
      "product": "PyCharm (EAP)",
      "status": "no-fix",
      "affectedVersion": "263.7307.50"
    },
    {
      "platform": "Windows apps",
      "product": "PyCharm Community Edition",
      "status": "no-fix",
      "affectedVersion": "2025.2.6.1"
    },
    {
      "platform": "Windows apps",
      "product": "PyCharm Professional Edition",
      "status": "no-fix",
      "affectedVersion": "2024.3.6.1"
    },
    {
      "platform": "Windows apps",
      "product": "PyCharm Professional Edition (EAP)",
      "status": "no-fix",
      "affectedVersion": "251.23774.354"
    }
  ],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}