ByteOS Network

NVD Vulnerability Details :

CVE-2026-21872

Analyzed

Source-security-advisories@github.com

Published At-08 Jan, 2026 | 10:15

Updated At-15 Jan, 2026 | 17:41

NiceGUI is a Python-based UI framework. From versions 2.22.0 to 3.4.1, an unsafe implementation in the click event listener used by ui.sub_pages, combined with attacker-controlled link rendering on the page, causes XSS when the user actively clicks on the link. This issue has been patched in version 3.5.0.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	3.1	6.1	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Type: Secondary

Version: 3.1

Base score: 6.1

Base severity: MEDIUM

Vector:

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CPE Matches

zauberzeug>>nicegui>>Versions from 2.22.0(inclusive) to 3.5.0(exclusive)

cpe:2.3:a:zauberzeug:nicegui:*:*:*:*:*:*:*:*

Weaknesses

CWE ID	Type	Source
CWE-79	Primary	security-advisories@github.com

CWE ID: CWE-79

Type: Primary

Source: security-advisories@github.com

References

Hyperlink	Source	Resource
https://github.com/zauberzeug/nicegui/releases/tag/v3.5.0	security-advisories@github.com	Release Notes
https://github.com/zauberzeug/nicegui/security/advisories/GHSA-m7j5-rq9j-6jj9	security-advisories@github.com	Exploit Vendor Advisory

Hyperlink: https://github.com/zauberzeug/nicegui/releases/tag/v3.5.0

Source: security-advisories@github.com

Resource:

Release Notes

Hyperlink: https://github.com/zauberzeug/nicegui/security/advisories/GHSA-m7j5-rq9j-6jj9

Source: security-advisories@github.com

Resource:

Exploit

Vendor Advisory

CISA Catalog

Metrics

CPE Matches

Weaknesses

Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References

Change History