# CVE-2026-39423: MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain an Eval Injection vulnerability…

Source: https://junglewise.ai/threats/cve-2026-39423-maxkb-is-an-open-source-ai-assistant-for-enterprise-versions-2-7  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-14  
License: CC BY 4.0 with a link back

CVE-2026-39423 · Severity: medium · CVSS 5.4 · Published 2026-04-14

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.

Technologies: [Maxkb](https://junglewise.ai/threats/technologies/maxkb-maxkb). Vendors: [Maxkb](https://junglewise.ai/threats/vendors/maxkb).

## Quick answers

**Is CVE-2026-39423 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-39423 being exploited in the wild.

**How severe is CVE-2026-39423?** Medium severity, with a CVSS score of 5.4, published 14 April 2026.

**Which products and versions are affected?** Maxkb. The advisory does not name versions.

**Is there a fix for CVE-2026-39423?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-39423?** Check whether you run Maxkb. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Maxkb

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