Description

MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain a Stored Cross-Site Scripting (XSS) vulnerability through the application name or icon fields when creating an application. When a victim visits the public chat interface (/ui/chat/{access_token}), the ChatHeadersMiddleware retrieves the application data and directly inserts the unescaped application name and icon into the HTML response via string replacement. This allows an attacker to execute arbitrary JavaScript in the victim's browser context. This issue has been fixed in version 2.8.0.

INFO

Published Date :

2026-04-14T00:22:50.958Z

Last Modified :

2026-04-14T13:32:41.804Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-39422 vulnerability.

Vendors Products
1panel
  • Maxkb
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-39422.

URL Resource
https://github.com/1Panel-dev/MaxKB/commit/026a2d623e2aa5efa67c4834651e79d5d7cab1da cve-icon cve-icon
https://github.com/1Panel-dev/MaxKB/releases/tag/v2.8.0 cve-icon cve-icon
https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-wf7p-3jq5-q52w cve-icon cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
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Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
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SS Confidentiality
SS Integrity
SS Availability