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CVE-2026-25516 NiceGUI's XSS vulnerability in ui.markdown() allows arbitrary JavaScript execution through unsanitized HTML content

🗓️ 06 Feb 2026 21:12:19Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 56 Views

NiceGUI ui.markdown() is vulnerable to XSS via HTML rendered by innerHTML, fixed in 3.7.0.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-25516
6 Feb 202621:12
–attackerkb
circl
Circl
CVE-2026-25516
5 Feb 202611:12
–circl
cnnvd
CNNVD
NiceGUI cross-site scripting vulnerability
6 Feb 202600:00
–cnnvd
cve
CVE
CVE-2026-25516
6 Feb 202621:12
–cve
euvd
EUVD
EUVD-2026-5566
6 Feb 202621:12
–euvd
github
Github Security Blog
NiceGUI's XSS vulnerability in ui.markdown() allows arbitrary JavaScript execution through unsanitized HTML content
5 Feb 202617:41
–github
mend
Mend
CVE-2026-25516
6 Feb 202621:12
–mend
nvd
NVD
CVE-2026-25516
6 Feb 202622:16
–nvd
osv_ghsa
osv_ghsa
GHSA-V82V-C5X8-W282 NiceGUI's XSS vulnerability in ui.markdown() allows arbitrary JavaScript execution through unsanitized HTML content
5 Feb 202617:41
–osv_ghsa
osv_pysec
osv_pysec
PYSEC-2026-2231
6 Feb 202622:16
–osv_pysec
Rows per page
[
  {
    "vendor": "zauberzeug",
    "product": "nicegui",
    "versions": [
      {
        "version": "< 3.7.0",
        "status": "affected"
      }
    ]
  }
]

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