CVE-2026-88898 AppFlowy-Cloud 0.7.2 through 0.9.64 Missing Workspace Authorization on Bulk Publish Endpoint
Authenticated users can publish malicious content to other tenants' workspaces due to missing authorization checks on the bulk publish endpoint.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-88898?
CVE-2026-88898 is a high-severity missing authorization vulnerability in AppFlowy-IO AppFlowy-Cloud, published on 10 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-862
Which versions are affected by CVE-2026-88898?
How do I fix CVE-2026-88898?
No fix has been published for CVE-2026-88898 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-88898 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-88898 exists.
Sources
Also known as GHSA-8p2p-fv97-r9ww.