---
id: CVE-2026-77520
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, a normal user in the same workspace can obtain another user's
  application_id from the homepage application question-ranking endpoint when
  the published victi…
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-862
vendor: 1Panel-dev
product: MaxKB
affected:
  - MaxKB <= 2.10.2-lts
published: '2026-09-21'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T16:17:54.987'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77520'
references:
  - url: >-
      https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-4w4r-h4x8-mg7h
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-22T14:12:23.804419Z'
ingestedAt: '2026-09-21T20:52:58.298Z'
epss: 0.0023
epssPercentile: 0.12309
---

## Overview

MaxKB is an open-source AI assistant for enterprise. In 2.10.2-lts and earlier, a normal user in the same workspace can obtain another user's application_id from the homepage application question-ranking endpoint when the published victim application has ranking activity in the selected date range and the attacker knows or guesses its name, even though direct application detail and debug-open routes deny access. An attacker who can create and publish a workflow application can place the disclosed identifier in an attacker-owned workflow application-node, trigger that workflow, receive output generated by the victim application, and create durable application_chat and application_chat_record rows under the victim application because save and runtime paths do not verify permission to use the referenced application. No fixed version is available as of this review.

## Remediation

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