Vulnerability · Published Apr 14, 2026 · Assigned by GitHub_M

CVE-2026-39423Stored XSS via Eval Injection in EchartsRander Component

Medium 6.9

In plain English

A medium-severity cross-site scripting in MaxKB from 1Panel-dev. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).

Severity (CVSS 4.0)6.9Medium

Exploit odds (30 days)0.2%top 93.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
1Panel-dev	MaxKB	< 2.8.0

Weakness: CWE-79, CWE-95 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

References

https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-462x-99gf-mp79 x_refsource_CONFIRM
https://github.com/1Panel-dev/MaxKB/commit/34fb95bde9574c5b3a734ab00c7f29b9e7d32669 x_refsource_MISC
https://github.com/1Panel-dev/MaxKB/releases/tag/v2.8.0 x_refsource_MISC