CVE-2026-85584

HighCVSS 7.5/10Last modified Sep 8, 2026

Description

SiYuan versions before v3.8.2 contain a denial of service vulnerability in the publish-service Basic Auth throttle that stores failed-attempt state using attacker-controlled usernames without enforcing capacity limits or eviction policies. Unauthenticated attackers can submit repeated authentication requests with unique invalid usernames to exhaust memory and increase synchronization overhead, degrading service availability.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Sep 4, 2026
Last modified
Sep 8, 2026
NVD status
Deferred

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CVE-2026-85584: High severity, CVSS 7.5 | Vulnix