Vulnerability · Published Sep 4, 2026 · Assigned by VulnCheck
CVE-2026-85619AppFlowy-Cloud 0.9.64 Cross-Workspace Collab Access via HTTP API
High 7.5
In plain English
A high-severity incorrect authorization in AppFlowy-Cloud from AppFlowy-IO. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.6%top 52.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| AppFlowy-IO | AppFlowy-Cloud | 0 – through 0.9.64 |
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- GitHub Issue #1624 issue-tracking
- https://github.com/AppFlowy-IO/AppFlowy-Cloud product
- https://github.com/AppFlowy-IO/AppFlowy-Cloud/blob/0.9.64/libs/access-control/src/casbin/collab.rs technical-description
- VulnCheck Advisory: AppFlowy-Cloud 0.9.64 Cross-Workspace Collab Access via HTTP API third-party-advisory