CVE-2026-85622
🔶 mediumSummary
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.
CVSS Score
5.3
Medium
EPSS Score
0.3
Exploit Probability
Published Date
2026-09-04
First Seen: 2026-09-05
📊 Relative Risk Intelligence
This CVE is Lower Risk - more severe than 19.1% of all 353,061 vulnerabilities in our database.
#285,455
Below average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: Sep 4, 2026
🔍 Exploitation Status
Poc
Proof-of-concept available
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Partial
Limited system impact
🏆 Discovered By
George Chen
SSVC data provided by
CISA
Last Modified
2026-09-04
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS Vector 4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE IDs (Weakness Types)