CVE-2026-73054High· 7.5▾ TwilightSiYuan versions before v3.7.4 contain an authentication bypass vulnerability in the WebSocket endpoint caused by differential parsing of query parameters between authentication exemption and session quarantine checks. Unauthenticated att…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 16.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
0.3% → 0.5%
SiYuan versions before v3.7.4 contain an authentication bypass vulnerability in the WebSocket endpoint caused by differential parsing of query parameters between authentication exemption and session quarantine checks. Unauthenticated attackers can craft a malicious WebSocket URI with duplicated query parameters to bypass access auth code validation and receive the live kernel event stream including document identifiers, titles, and operation logs.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
github.com/siyuan-note/siyuan/kernel < 0.0.0-20260731131820-67bc300b6ea6Patched in:
github.com/siyuan-note/siyuan/kernel 0.0.0-20260731131820-67bc300b6ea6Connected by shared product, vendor, weakness, or advisory.
GHSA-hg5w-8ppq-wpjqHigh· 7.5Duplicate Advisory: SiYuan: A parser differential between the WebSocket keepalive exemption and the session quarantine allows unauthenticated access to the broadcast event stream, defeating the fix for GHSA-xp2m-98x8-rpj6
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