SiYuan versions before 3.7.4 contain a cross-site WebSocket hijacking vulnerability in the admin-only /ws/network/proxy endpoint that explicitly disables origin validation by setting CheckOrigin to unconditionally return true. Attackers can craft malicious webpages that establish WebSocket connections to this endpoint and direct the SiYuan kernel process to proxy arbitrary network traffic to attacker-chosen targets, enabling authenticated network pivoting through the victim's machine.
Metrics
Affected Vendors & Products
References
History
Mon, 17 Aug 2026 11:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | SiYuan versions before 3.7.4 contain a cross-site WebSocket hijacking vulnerability in the admin-only /ws/network/proxy endpoint that explicitly disables origin validation by setting CheckOrigin to unconditionally return true. Attackers can craft malicious webpages that establish WebSocket connections to this endpoint and direct the SiYuan kernel process to proxy arbitrary network traffic to attacker-chosen targets, enabling authenticated network pivoting through the victim's machine. | |
| Title | SiYuan 3.7.3 Cross-Site WebSocket Hijacking via network proxy | |
| First Time appeared |
B3log
B3log siyuan |
|
| Weaknesses | CWE-346 | |
| CPEs | cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:* | |
| Vendors & Products |
B3log
B3log siyuan |
|
| References |
| |
| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-08-17T17:58:26.388Z
Reserved: 2026-08-16T12:59:42.223Z
Link: CVE-2026-74802
No data.
Status : Received
Published: 2026-08-17T11:16:40.453
Modified: 2026-08-17T18:18:15.367
Link: CVE-2026-74802
No data.
OpenCVE Enrichment
Updated: 2026-08-17T13:15:04Z