Description
SiYuan is a personal knowledge management system. Prior to version 3.6.2, the SiYuan kernel WebSocket server accepts unauthenticated connections when a specific "auth keepalive" query parameter is present. After connection, incoming messages are parsed using unchecked type assertions on attacker-controlled JSON. A remote attacker can send malformed messages that trigger a runtime panic, potentially crashing the kernel process and causing denial of service. Version 3.6.2 fixes the issue.
INFO
Published Date :
2026-03-20T22:32:33.219Z
Last Modified :
2026-03-23T16:46:04.215Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2026-33203 vulnerability.
| Vendors | Products |
|---|---|
| B3log |
|
| Siyuan |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-33203.
CVSS Vulnerability Scoring System
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact