Vulnerability · NVD published 2026-08-18
CVE-2026-74904
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
- Exploited in the wild
- Not on KEVNot in CISA's catalogue as of the last daily pull. Absence is not proof of safety.
- EPSS · 30-day forecast
- 1%Chance of exploitation in the next 30 days, 42th percentile of all CVEs. A forecast; KEV outranks it.
- CVSS · NVD · HIGH
- 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Internet exposure
- not stated by sourcesNo exposure census on this CVE's dispatches.
Exploits
not checkedNot checked yet. Our exploit watch has not looked at this CVE, so this says nothing either way.
On the wire
1 dispatchWatch this one?
KEV additions reach Telegram and the KEV-only RSS as they land.
Check your stack
Paste what you run: the CVEs exploited in the wild against it, and who is cited as exploiting them, with the report.
Stack checkNo key. No signup.