CVE-2026-85578

Summary

SiYuan through 3.8.1 contains an authorization bypass vulnerability in the /api/file/getFile endpoint that allows readers to retrieve files from notebooks explicitly configured as Visible:false. Attackers with reader role can access private workspace files including notebook metadata and internal configuration by knowing the hidden notebook identifier and file path.

Affected Software

VendorProductVersion RangeStatus
siyuan-notesiyuan0 <= 3.8.1affected

Weaknesses

  • CWE-862: Missing Authorization

References