CVE-2026-85619
Received Received - Intake

Authorization Bypass in AppFlowy-Cloud 0.9.64

Publication date: 2026-09-04

Last updated on: 2026-09-04

Assigner: VulnCheck

Description
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.

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Meta Information

Published
2026-09-04
Last Modified
2026-09-04
Generated
2026-09-04
AI Q&A
2026-09-04
EPSS Evaluated
N/A
NVD
CVE-2026-85619
EUVD
EUVD-2026-71226

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
appflowy cloud to 0.9.64 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-863 The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

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Executive Summary

AppFlowy-Cloud 0.9.64 has a flaw where it does not verify if requested collaboration objects belong to the specified workspace during authorization checks. Attackers can bypass access controls by providing a victim's object ID with their own workspace ID, allowing unauthorized access to read, modify, or delete data across different workspaces.

Detection Guidance

To detect this vulnerability, inspect HTTP API requests for improper authorization checks. Look for requests where a victim's object ID is paired with an attacker-controlled workspace ID. Check logs for cross-workspace data access attempts or unauthorized modifications. Review access control implementations in collab.rs for missing workspace ownership validation.

Impact Analysis

This vulnerability allows attackers to access, modify, or delete your documents and database rows even if they belong to a different workspace. If you use AppFlowy-Cloud 0.9.64 or earlier, sensitive data could be exposed or altered without your knowledge.

Compliance Impact

This vulnerability could lead to unauthorized data access, violating GDPR's data protection principles and HIPAA's security requirements for protected health information. Organizations using affected versions may face compliance violations, legal penalties, and reputational damage due to potential data breaches.

Mitigation Strategies

Upgrade to a patched version of AppFlowy Cloud (Managed or Self-hosted) as the open-core model no longer maintains version 0.9.64. Disable or restrict access to the vulnerable API endpoints if immediate upgrade is not possible.

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