CVE-2026-39422

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.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/1Panel-dev/MaxKB/commit/026a2d623e2aa5efa67c4834651e79d5d7cab1da	Patch
https://github.com/1Panel-dev/MaxKB/releases/tag/v2.8.0	Release Notes
https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-wf7p-3jq5-q52w	Exploit Vendor Advisory
https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-wf7p-3jq5-q52w	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:maxkb:maxkb:*:*:*:*:-:*:*:*

History

No history.

Information

Published : 2026-04-14 01:16

Updated : 2026-06-17 10:42

NVD link : CVE-2026-39422

Mitre link : CVE-2026-39422

CVE.ORG link : CVE-2026-39422

JSON object : View

Products Affected

maxkb

maxkb

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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