---
id: CVE-2026-88898
title: >-
  AppFlowy-Cloud versions 0.7.2 through 0.9.64 fail to authorize callers against
  the workspace in the bulk publish endpoint path, allowing authenticated users
  to publish content into other tenants' namespaces
summary: >-
  AppFlowy-Cloud versions 0.7.2 through 0.9.64 fail to authorize callers against
  the workspace in the bulk publish endpoint path, allowing authenticated users
  to publish content into other tenants' namespaces. Attackers can write
  published…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-862
vendor: AppFlowy-IO
product: AppFlowy-Cloud
affected:
  - AppFlowy-Cloud >= 0.7.2 <= 0.9.64
published: '2026-09-10'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T16:18:11.997'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88898'
references:
  - url: 'https://gist.github.com/mtholmquist/ab550712a4628c7c7c4705bceccd93b3'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/AppFlowy-IO/AppFlowy-Cloud'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/AppFlowy-IO/AppFlowy-Cloud/blob/0.9.64/src/api/workspace.rs
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/AppFlowy-IO/AppFlowy-Cloud/blob/0.9.64/src/biz/workspace/publish.rs
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/appflowy-cloud-0.7.2-through-0.9.64-missing-workspace-authorization-on-bulk-publish-endpoint
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-10T14:58:59.102458Z'
ingestedAt: '2026-09-10T19:38:07.347Z'
epss: 0.00389
epssPercentile: 0.30223
---

## Overview

AppFlowy-Cloud versions 0.7.2 through 0.9.64 fail to authorize callers against the workspace in the bulk publish endpoint path, allowing authenticated users to publish content into other tenants' namespaces. Attackers can write published views with attacker-controlled title, body and metadata into victim workspaces to deface public pages or host phishing content on trusted URLs.

## Remediation

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