---
id: CVE-2026-77519
title: MaxKB is an open-source AI assistant for enterprise
summary: >-
  MaxKB is an open-source AI assistant for enterprise. In 2.10.2-lts and
  earlier, the /chat/api/mcp authentication path looks up an ApplicationApiKey
  using only its secret and active status, without enforcing the is_permanent
  and expire_ti…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'
cwe:
  - CWE-613
vendor: 1Panel-dev
product: MaxKB
affected:
  - MaxKB <= 2.10.2-lts
published: '2026-09-21'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T23:19:01.700'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77519'
references:
  - url: >-
      https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-r6g6-69fh-c39q
    label: security-advisories@github.com
  - url: >-
      https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-r6g6-69fh-c39q
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-24T22:41:50.977189Z'
epss: 0.00283
epssPercentile: 0.18523
ingestedAt: '2026-09-21T20:52:58.300Z'
---

## Overview

MaxKB is an open-source AI assistant for enterprise. In 2.10.2-lts and earlier, the /chat/api/mcp authentication path looks up an ApplicationApiKey using only its secret and active status, without enforcing the is_permanent and expire_time checks used by the standard chat API. A previously valid, non-permanent application key that remains active after expiration can initialize the MCP endpoint, list the published application's tool metadata, invoke tools/call, and create durable application_chat and application_chat_record state even though /chat/api/open rejects the same key. No fixed version is available as of this review.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.