{"cve":"CVE-2026-74904","nvd":{"published":"2026-08-18T12:19:30.643","modified":"2026-10-22T22:10:00.250","status":"Deferred","description":"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_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":8.7},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-862"],"references":["https://github.com/siyuan-note/siyuan/security/advisories/GHSA-4vpg-gwqq-w44c","https://www.vulncheck.com/advisories/siyuan-before-missing-authorization-via-block-api","https://github.com/siyuan-note/siyuan/security/advisories/GHSA-4vpg-gwqq-w44c"],"products":[],"source":"nvd","synced_at":"2026-10-23T16:39:26.291718493+00:00"},"epss":{"cve":"CVE-2026-74904","score":0.00449,"percentile":0.38759,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-4vpg-gwqq-w44c","url":"https://osv.dev/vulnerability/GHSA-4vpg-gwqq-w44c","summary":"SiYuan: 17 block metadata/content endpoints in kernel/api/block.go have zero publish-access filtering, reachable by anonymous publish-mode readers","modified":"2026-10-07T17:56:04.435399445Z","packages":[{"ecosystem":"Go","name":"github.com/siyuan-note/siyuan/kernel","purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","ranges":["<0.0.0-20260804015139-bd067a4fe9b2"],"fixed":["0.0.0-20260804015139-bd067a4fe9b2"]}]},{"id":"GO-2026-6654","url":"https://osv.dev/vulnerability/GO-2026-6654","summary":"SiYuan: 17 block metadata/content endpoints in kernel/api/block.go have zero publish-access filtering, reachable by anonymous publish-mode readers in github.com/siyuan-note/siyuan/kernel","modified":"2026-10-07T17:45:12.488229429Z","packages":[{"ecosystem":"Go","name":"github.com/siyuan-note/siyuan/kernel","purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","ranges":["<0.0.0-20260804015139-bd067a4fe9b2"],"fixed":["0.0.0-20260804015139-bd067a4fe9b2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}