Vulnerability DatabaseCVE-2026-85622
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CVE-2026-85622
Published:September 04, 2026
Updated:September 22, 2026
AppFlowy-Cloud through 0.9.64 fails to validate workspace membership when establishing WebSocket connections in the establish_ws_connection_v2 handler, allowing authenticated users to bind sessions to workspaces they do not belong to. Attackers can send sync Manifest messages with victim object identifiers to read full document or database state from collaborations in other workspaces without victim involvement.
Related Resources (6)
https://github.com/AppFlowy-IO/AppFlowy-Cloud
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85622.json
https://github.com/AppFlowy-IO/AppFlowy-Cloud/blob/0.9.64/src/api/ws.rs
https://github.com/AppFlowy-IO/AppFlowy-Cloud/issues/1629
https://www.vulncheck.com/advisories/appflowy-cloud-through-0.9.64-cross-workspace-collab-read-via-websocket
https://nvd.nist.gov/vuln/detail/CVE-2026-85622
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CVSS v4
Base Score:
6
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Incorrect Authorization
CWE-863
EPSS
Base Score:
0.31