CVE-2026-85582CWE-770denial-of-service

CVE-2026-85582

Medium · published September 4, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
36.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
7.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00436 · 36.8th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-09-04T16:17Z
References (3)
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-f4vj-ppp2-5hg4 · [email protected]https://www.vulncheck.com/advisories/siyuan-before-3.8.2-unbounded-session-creation-via-basic-auth · [email protected]https://github.com/siyuan-note/siyuan/security/advisories/GHSA-f4vj-ppp2-5hg4 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 06 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 04 SEP 11:29Z
    SiYuan before v3.8.2 Unbounded Session Creation via Basic Auth
    cvelistv5