PT-2026-85484 · Siyuan · Siyuan
CVE-2026-85584
·
Published
2026-09-04
·
Updated
2026-09-04
CVSS v4.0
8.7
High
| Vector | AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
Name of the Vulnerable Software and Affected Versions
SiYuan versions prior to 3.8.2
Description
A denial of service issue exists in the publish-service Basic Auth throttle. The system stores the state of failed authentication attempts using usernames provided by the user without enforcing capacity limits or eviction policies. Unauthenticated attackers can send repeated authentication requests using unique invalid usernames to exhaust system memory and increase synchronization overhead, which degrades service availability.
Recommendations
Update to version 3.8.2 or later.
Exploit
Fix
Allocation of Resources Without Limits
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Weakness Enumeration
Related Identifiers
Affected Products
Siyuan