CVE-2026-33203
SiYuan has an Unauthenticated WebSocket DoS via Auth Keepalive Bypass in github.com/siyuan-note/siyuan/kernel
7.5
HIGH
CVSS 3.1
EPSS 0.07%
Description
SiYuan has an Unauthenticated WebSocket DoS via Auth Keepalive Bypass in github.com/siyuan-note/siyuan/kernel. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. (If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.) The additional affected modules and versions are: github.com/siyuan-note/siyuan/kernel before v3.6.2.
How to fix CVE-2026-33203
To remediate CVE-2026-33203, upgrade the affected package to a fixed version below.
- —upgrade to 3.6.2 or later
- —no fix listed
Is CVE-2026-33203 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 3.6.2
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |