cve.bz

CVE-2026-74904

8.7 highEPSS 0.4%

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.

CVSS 4.0
8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
0.4% chance of exploitation in the next 30 days; higher than 38% of CVEs (scores of 2026-10-25)
CWE
CWE-862
Published
Modified
Record from
the NVD, synced

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-4vpg-gwqq-w44cGogithub.com/siyuan-note/siyuan/kernel<0.0.0-20260804015139-bd067a4fe9b20.0.0-20260804015139-bd067a4fe9b2
GO-2026-6654Gogithub.com/siyuan-note/siyuan/kernel<0.0.0-20260804015139-bd067a4fe9b20.0.0-20260804015139-bd067a4fe9b2

References

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