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TI-2026-58747 Aliases CVE-2026-85622GHSA-gjxj-rv8r-wcp5

AppFlowy-Cloud through 0.9.64 Cross-Workspace Collab Read via WebSocket

Priority MEDIUM 60CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00395 33rd percentileScored 2026-11-07
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

VendorProductAffected versionsFixed inStatusSource
AppFlowy-IOAppFlowy-Cloudup to 0.9.64—No fix listedCNA
  • AppFlowy-Cloud VendorAppFlowy-IO Affected up to 0.9.64 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-85622
  2. 2026-10-03 Alias added: GHSA-gjxj-rv8r-wcp5

References

Other 3

  • TI-2026-58744 AppFlowy-Cloud 0.9.64 Cross-Workspace Collab Access via HTTP API CVSS 4.0HIGH 7.7
  • TI-2026-60282 AppFlowy-Cloud 0.7.2 through 0.9.64 Missing Workspace Authorization on Bulk Publish Endpoint CVSS 4.0HIGH 7.1
  • TI-2026-13403 Authenticated SQL Injection in AppFlowy CVSS 4.0HIGH 7.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences