PT-2026-32576 · 1Panel Dev · Maxkb

Liqiang-Fit2Cloud · Published 2026-04-14 · Updated 2026-04-14 · CVE-2026-39422

Mitre

CVSS v4.0

6.9

Medium

AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-39422

Affected Products

Maxkb

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2026-39422 · Security Note
• https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-wf7p-3jq5-q52w · Note
• https://github.com/1Panel-dev/MaxKB/releases/tag/v2.8.0 · Note
• https://github.com/1Panel-dev/MaxKB/commit/026a2d623e2aa5efa67c4834651e79d5d7cab1da · Note
• https://twitter.com/CVEnew/status/2043976151635230988 · Twitter Post
• https://twitter.com/CVEarity/status/2044095536224260135 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2043998383736557616 · Twitter Post