VULNERABILITY INTELLIGENCE
CVE-2026-85584
CVSS score8.7 HIGH
EPSS probability0.59%
CISA KEVNot currently listed
Published2026-09-04
Last modified2026-09-08
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
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.
Weakness classification
- CWE-770: Allocation of Resources Without Limits or Throttling