CVE-2026-30926 - SiYuan Note publish service authorization bypass allows low-privilege users to m...

CVE ID :CVE-2026-30926 Published : March 10, 2026, 7:44 a.m. | 1 hour, 3 minutes ago Description :SiYuan is a personal knowledge management system. Prior to 3.5.10, a privilege escalation vulnerability exists in the publish service of SiYuan Note that allows low-privilege publish accounts (RoleReader) to modify notebook content via the /api/block/appendHeadingChildren API endpoint. The endpoint requires only the model.CheckAuth role, which accepts RoleReader sessions, but it does not enforce stricter checks, such as CheckAdminRole or CheckReadonly. This allows remote authenticated publish users with read-only privileges to append new blocks to existing documents, compromising the integrity of stored notes. Severity: 7.1 | HIGH Visit the link for more details, such as CVSS details, affected products, timeline, and more...