CVE-2026-39423

MEDIUM

Stored XSS via Eval Injection in EchartsRander Component

Title source: cna
STIX 2.1

Description

MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain an Eval Injection vulnerability in the Markdown rendering engine that allows any user capable of interacting with the AI chat interface to execute arbitrary JavaScript in the browsers of other users, including administrators, resulting in Stored Cross-Site Scripting (XSS). This issue has been fixed in version 2.8.0.

References (3)

Core 3

Scores

CVSS v3 5.4
EPSS 0.0017
EPSS Percentile 6.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79 CWE-95
Status published
Products (2)
1Panel-dev/MaxKB < 2.8.0
maxkb/maxkb < 2.8.0
Published Apr 14, 2026
Tracked Since Apr 14, 2026