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High severity7.5NVD Advisory· Published Jan 6, 2025· Updated Apr 15, 2026

CVE-2025-21618

CVE-2025-21618

Description

NiceGUI is an easy-to-use, Python-based UI framework. Prior to 2.9.1, authenticating with NiceGUI logged in the user for all browsers, including browsers in incognito mode. This vulnerability is fixed in 2.9.1.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
niceguiPyPI
< 2.9.12.9.1

Patches

1
1621a4ba6a06

Merge commit from fork

https://github.com/zauberzeug/niceguiPaula KammlerJan 6, 2025via ghsa
commit
1 file changed · +1 −0
  • nicegui/air.py+1 −0 modified
    @@ -59,6 +59,7 @@ async def _handle_http(data: Dict[str, Any]) -> Dict[str, Any]:
                 content=data['body'],
             )
             response = await self.client.send(request)
+            self.client.cookies.clear()
             instance_id = data['instance-id']
             content = response.content.replace(
                 b'const extraHeaders = {};',

Vulnerability mechanics

Generated by null/stub on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.

References

4

News mentions

0

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