CVE-2026-88898: Missing Authorization in AppFlowy-IO AppFlowy-Cloud
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.
AI Analysis
Technical Summary
AppFlowy-Cloud versions 0.7.2 through 0.9.64 contain a missing authorization vulnerability in the bulk publish endpoint path. Authenticated users are not properly checked against the workspace they are publishing to, enabling them to write published views with attacker-controlled title, body, and metadata into victim workspaces. This can be exploited to deface public pages or host phishing content under trusted URLs.
Potential Impact
The vulnerability allows authenticated users to publish arbitrary content into other tenants' namespaces without proper authorization. This can lead to defacement of public pages or hosting of phishing content on URLs trusted by users, potentially damaging the reputation of affected tenants and exposing users to phishing attacks.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the bulk publish endpoint and monitor for unauthorized publishing activity.
CVE-2026-88898: Missing Authorization in AppFlowy-IO AppFlowy-Cloud
Description
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.
CVSS v4.0
Score 7.1high
Affected software
AppFlowy-IO
AppFlowy-Cloud
pkg:github/appflowy-io/AppFlowy-CloudRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
AppFlowy-Cloud versions 0.7.2 through 0.9.64 contain a missing authorization vulnerability in the bulk publish endpoint path. Authenticated users are not properly checked against the workspace they are publishing to, enabling them to write published views with attacker-controlled title, body, and metadata into victim workspaces. This can be exploited to deface public pages or host phishing content under trusted URLs.
Potential Impact
The vulnerability allows authenticated users to publish arbitrary content into other tenants' namespaces without proper authorization. This can lead to defacement of public pages or hosting of phishing content on URLs trusted by users, potentially damaging the reputation of affected tenants and exposing users to phishing attacks.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the bulk publish endpoint and monitor for unauthorized publishing activity.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-10T11:28:50.297Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa2c79d8744ddd5a6d0492f
Added to database: 09/10/2026, 15:07:09 UTC
Last enriched: 09/10/2026, 15:07:55 UTC
Last updated: 09/10/2026, 17:51:10 UTC
Views: 7
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