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CVE

CVE-2026-21873

NiceGUI is a Python-based UI framework.
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CVE

CVE-2026-21873

NiceGUI is a Python-based UI framework.

NiceGUI is a Python-based UI framework. From versions 2.22.0 to 3.4.1, an unsafe implementation in the pushstate event listener used by ui.sub_pages allows an attacker to manipulate the fragment identifier of the URL, which they can do despite being cross-site, using an iframe. This issue has been patched in version 3.5.0.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.2
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
C
H
U
7.2
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Related Resources

No items found.

References

https://github.com/zauberzeug/nicegui/releases/tag/v3.5.0, https://github.com/zauberzeug/nicegui/security/advisories/GHSA-mhpg-c27v-6mxr

Severity

7.2

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.2
EPSS Probability
0.00029%
EPSS Percentile
0.07796%
Introduced Version
0,2.22.0
Fix Available
ae20f775a683fdf8643cb8cbb35d14279b866af6,3.5.0

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