---
id: CVE-2026-85619
title: >-
  AppFlowy-Cloud 0.9.64 fails to verify that requested collab objects belong to
  the workspace in authorization checks, allowing attackers to access documents
  and database rows across workspaces
summary: >-
  AppFlowy-Cloud 0.9.64 fails to verify that requested collab objects belong to
  the workspace in authorization checks, allowing attackers to access documents
  and database rows across workspaces. Attackers can supply a victim's object ID
  wi…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-863
published: '2026-09-04'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T15:53:23.707'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-85619'
references:
  - url: 'https://github.com/AppFlowy-IO/AppFlowy-Cloud'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/AppFlowy-IO/AppFlowy-Cloud/blob/0.9.64/libs/access-control/src/casbin/collab.rs
    label: disclosure@vulncheck.com
  - url: 'https://github.com/AppFlowy-IO/AppFlowy-Cloud/issues/1624'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/appflowy-cloud-0.9.64-cross-workspace-collab-access-via-http-api
    label: disclosure@vulncheck.com
  - url: 'https://github.com/AppFlowy-IO/AppFlowy-Cloud/issues/1624'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.0054
epssPercentile: 0.44353
ingestedAt: '2026-09-10T16:57:28.704Z'
---

## Overview

AppFlowy-Cloud 0.9.64 fails to verify that requested collab objects belong to the workspace in authorization checks, allowing attackers to access documents and database rows across workspaces. Attackers can supply a victim's object ID with their own workspace ID to bypass access controls and read, modify, or delete cross-workspace data.

## Remediation

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