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Advisories

SiYuan before v3.7.4 Insufficient Access Control via spinBlockDOM

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severity
medium
date
Affecting

  • siyuan >= 0, < 3.7.4

CWE
  • CWE-400 Uncontrolled Resource Consumption
CVSS
5.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Credit
KushSathwara
Description
SiYuan before v3.7.4 contains an insufficient access control vulnerability in the /api/lute/spinBlockDOM endpoint, which is guarded only by CheckAuth middleware instead of CheckAdminRole like its sibling endpoint. Authenticated users with RoleEditor or RoleReader roles can invoke the endpoint to transform arbitrary DOM input, and large payloads cause endpoint starvation through per-path mutex serialization.

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