vulnerability · Tue 18 Aug 2026 · 12:19 UTC
CVE-2026-74904: SiYuan before v3.7.4 is missing authorization checks in 17 block metadata/content
Filed UTCSource GTH ↗
SiYuan before v3.7.4 is missing authorization checks in 17 block metadata/content endpoints in kernel/api/block.go (including getRefText, checkBlockExist, and getBlockBreadcrumb). These handlers are gated only by basic authentication (model.CheckAuth) and lack publish-access filtering, allowing anonymous publish-mode readers to disclose private block content-derived text, structural metadata, and existence information for arbitrary block IDs across the workspace.
Signals
as the pipeline stamped them- High
- High-risk vulnerability — CVSS 7.5
CVE
KEV from CISA · EPSS from FIRST| Id | KEV | EPSS | Reference |
|---|---|---|---|
| CVE-2026-74904 | — | 0.50% | NVD ↗ |
Indicators
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