CVE-2026-85585
SiYuan before v3.8.2 Unbounded Memory Consumption via ControlConcurrency
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
SiYuan before v3.8.2 contains an unbounded resource consumption vulnerability in the request-concurrency middleware that retains mutex entries for every unique request path without eviction. Unauthenticated attackers can send numerous unique request paths to permanently increase process memory and synchronization overhead, degrading availability.
| CWE | CWE-400 |
| Vendor | siyuan-note |
| Product | siyuan |
| Published | Sep 4, 2026 |
| Last Updated | Sep 4, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
siyuan-note / siyuan
0 < 3.8.2
References
Credits
🔍 alham-rizvi