AppFlowy-Cloud 0.7.2 through 0.9.64 Missing Workspace Authorization on Bulk Publish Endpoint
Priority MEDIUM 64CWE-862Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00389 33rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| AppFlowy-IO | AppFlowy-Cloud | 0.7.2 – 0.9.64 | — | No fix listed | CNA |
- AppFlowy-Cloud VendorAppFlowy-IO Affected 0.7.2 – 0.9.64 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-88898
- 2026-10-03 Alias added: GHSA-8p2p-fv97-r9ww
References
More AppFlowy-IO vulnerabilities
- TI-2026-58744 AppFlowy-Cloud 0.9.64 Cross-Workspace Collab Access via HTTP API CVSS 4.0HIGH 7.7
- TI-2026-13403 Authenticated SQL Injection in AppFlowy CVSS 4.0HIGH 7.1
- TI-2026-58747 AppFlowy-Cloud through 0.9.64 Cross-Workspace Collab Read via WebSocket CVSS 4.0MEDIUM 6.0
Sources
- CVE-2026-88898 · CVE Program
- CVE-2026-88898 · NVD
- FIRST EPSS
- GHSA-8p2p-fv97-r9ww · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences