---
cve: "CVE-2026-39423"
severity: "MEDIUM"
cvss: 6.9
epss: "0.2%"
vendor: "1Panel-dev"
kev: false
exploited: false
published: "2026-04-14 01:16:05"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-24T20:36:25+02:00"
---

# CVE-2026-39423

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |

## Patch verfügbar (OSV)

- f0a73da5d9ee22e6374dabd4da1081569659530c (Commit)
- 34fb95bde9574c5b3a734ab00c7f29b9e7d32669 (Commit)

## Referenzen

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

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-39423) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_