High severity · published Sep 4, 2026
CVE-2026-85619
AppFlowy-Cloud 0.9.64 Cross-Workspace Collab Access via HTTP API
7.5
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 47% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AP
AppFlowy-Cloud · AppFlowy-IO
through 0.9.64 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-85619
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-85619
github.com
https://github.com/AppFlowy-IO/AppFlowy-Cloud
github.com
https://github.com/AppFlowy-IO/AppFlowy-Cloud/blob/0.9.64/libs/access-control/src/casbin/collab.rs
github.com
https://github.com/AppFlowy-IO/AppFlowy-Cloud/issues/1624
www.vulncheck.com
https://www.vulncheck.com/advisories/appflowy-cloud-0.9.64-cross-workspace-collab-access-via-http-api
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