---
id: CVE-2026-111656
title: >-
  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
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'
cwe:
  - CWE-639
vendor: zhimaAi
product: chatwiki
affected:
  - chatwiki <= 2.9.6
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T22:17:21.820'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-111656'
references:
  - url: >-
      https://github.com/zhimaAi/chatwiki/blob/v2.9.6/internal/app/chatwiki/business/manage/form.go#L1192-L1242
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/zhimaAi/chatwiki/blob/v2.9.6/internal/app/chatwiki/business/manage/form.go#L878-L990
    label: disclosure@vulncheck.com
  - url: 'https://hackmd.io/@hieuPenguinnn/chatwiki-form-filter-cross-tenant-idor'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/chatwiki-through-2.9.6-cross-tenant-idor-via-form-filter-management-endpoints
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
epss: 0.00223
epssPercentile: 0.12811
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-16T19:34:05.599637Z'
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.

## Remediation

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