CVE-2026-85582: Allocation of Resources Without Limits or Throttling in siyuan-note siyuan
Description
SiYuan versions before v3.8.2 contain an unbounded session creation vulnerability in the publish-service Basic Auth handler that allows authenticated attackers to exhaust memory. Attackers can repeatedly authenticate with valid credentials to create persistent session entries without expiry or capacity limits, causing indefinite process memory growth and denial of service.
CVSS v4.0
Score 7.1high
Affected software
siyuan-note
siyuan
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-85582 describes an unbounded session creation vulnerability in SiYuan note-taking software versions prior to v3.8.2. Authenticated attackers can repeatedly authenticate using valid credentials to create persistent session entries that do not expire and have no capacity limits. This causes the process memory to grow indefinitely, potentially resulting in denial of service conditions.
Potential Impact
The vulnerability allows authenticated attackers to exhaust server memory by creating unlimited session entries, leading to denial of service. There is no indication of privilege escalation or data compromise from the provided data.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, limit access to the publish-service Basic Auth handler to trusted users and monitor for unusual session creation activity.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-04T10:56:22.465Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a9aad9eacd9273b4981d6eb
Added to database: 09/04/2026, 11:38:06 UTC
Last enriched: 09/07/2026, 12:01:53 UTC
Last updated: 10/19/2026, 18:48:24 UTC
Views: 82
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