What is CVE-2026-85585?

CVE-2026-85585 is a high-severity vulnerability, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-09-04.

How severe is CVE-2026-85585?

High severity. CVSS v3 base score is 7.5 out of 10.

CVE-2026-85585

CVE-2026-85585

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.

Vulnerability class: DoS (Denial of Service)

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

disclosure@vulncheck.com
disclosure@vulncheck.com

Frequently asked questions

What is CVE-2026-85585?: CVE-2026-85585 is a high-severity vulnerability, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-09-04.
How severe is CVE-2026-85585?: High severity. CVSS v3 base score is 7.5 out of 10.