CVE-2026-74904: Missing Authorization

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...

CVE-2026-66012

SiYuan before v3.7.2 has an unauthenticated access path via POST /mcp due to missing authorization enforcement (no admin/read-only role checks). In Publish anonymous mode, an anonymous RoleReader JWT can reach /mcp, enabling an attacker to read conf/conf.json (exfiltrating accessAuthCode, api.tok...

PT-2026-64762

Name of the Vulnerable Software and Affected Versions SiYuan versions prior to 3.7.2 Description A missing authorization issue exists in the 'POST /mcp' kernel endpoint, which is only protected by a general authentication check model.CheckAuth without enforcing admin roles or read-only...