---
id: CVE-2026-111656
title: ChatWiki through 2.9.6 Cross-Tenant IDOR via Form Filter Management Endpoints
summary: >-
  ChatWiki through 2.9.6 contains an insecure direct object reference
  vulnerability that allows authenticated users to access another tenant's form
  filters by supplying arbitrary form_id values. Attackers can send sequential
  form_id values…
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'
cvssSource: cna
cwe:
  - CWE-639
vendor: zhimaAi
product: chatwiki
affected:
  - chatwiki <= 2.9.6
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-16T19:34:05.599637Z'
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T21:18:25.806Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-111656'
references:
  - url: 'https://hackmd.io/@hieuPenguinnn/chatwiki-form-filter-cross-tenant-idor'
  - url: >-
      https://github.com/zhimaAi/chatwiki/blob/v2.9.6/internal/app/chatwiki/business/manage/form.go#L878-L990
  - url: >-
      https://github.com/zhimaAi/chatwiki/blob/v2.9.6/internal/app/chatwiki/business/manage/form.go#L1192-L1242
  - url: >-
      https://www.vulncheck.com/advisories/chatwiki-through-2.9.6-cross-tenant-idor-via-form-filter-management-endpoints
    label: >-
      VulnCheck Advisory: ChatWiki through 2.9.6 Cross-Tenant IDOR via Form
      Filter Management Endpoints
tags:
  - cve.org
ingestedAt: '2026-10-16T18:43:08.674Z'
---

## Overview

ChatWiki through 2.9.6 contains an insecure direct object reference vulnerability that allows authenticated users to access another tenant's form filters by supplying arbitrary form_id values. Attackers can send sequential form_id values to getFormFilterList, getFormFilterInfo and updateFormFilterSort to read filter rules and overwrite another tenant's filter sort order.

## Affected

- `chatwiki <= 2.9.6`

## Remediation

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