CVE-2026-23851
High · 7.7SiYuan Vulnerable to Arbitrary File Read via File Copy Functionality
CVSS
7.7
EPSS
0.5%
Published
Jan 21, 2026
CISA due date
—
The record
The SiYuan Note application (v3.5.3) contains a logic vulnerability in the /api/file/globalCopyFiles endpoint. The function allows authenticated users to copy files from any location on the server's filesystem into the application's workspace without proper path validation
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Go | github.com/siyuan-note/siyuan/kernel | 0 | 0.0.0-20260118092521-f8f4b517077b |
| openSUSE:Leap 15.6 | govulncheck-vulndb | 0 | 0.0.20260205T172317-150000.1.146.1 |
Related vulnerabilities
- GO-2026-4346 SiYuan Vulnerable to Arbitrary File Read via File Copy Functionality in… Same vulnerability
- CVE-2026-25992 SiYuan is a personal knowledge management system. Also affects github.com/siyuan-note/siyuan/kernel
- CVE-2026-25539 SiYuan is a personal knowledge management system. Also affects github.com/siyuan-note/siyuan/kernel
- GO-2026-4324 SiYuan Has a Stored Cross-Site Scripting (XSS) Vulnerability via Unrestricted SVG File… Also affects github.com/siyuan-note/siyuan/kernel
- GO-2026-4343 SiYuan has a Reflected Cross-Site Scripting (XSS) via /api/icon/getDynamicIcon in… Also affects github.com/siyuan-note/siyuan/kernel
- GO-2026-4347 SiYuan vulnerable to Arbitrary file Read / SSRF in github.com/siyuan-note/siyuan/kernel Also affects github.com/siyuan-note/siyuan/kernel
- GO-2026-4387 SiYuan has Arbitrary File Write via /api/file/copyFile leading to RCE in… Also affects github.com/siyuan-note/siyuan/kernel
- GO-2026-4386 SiYuan File Read API Case Sensitivity Bypass can Lead to Path Traversal in… Also affects github.com/siyuan-note/siyuan/kernel