cvedb.io
CVE-2026-39422
MEDIUM · CVSS 5.4
EPSS exploitation probability: 0%
Published 2026-04-14T01:16:04.850 · Last modified 2026-06-17T10:42:05.610

Summary

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.

Affected products

maxkb — maxkb

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.