CVE-2026-25992

SiYuan is a personal knowledge management system. Prior to 3.5.5, the /api/file/getFile endpoint uses case-sensitive string equality checks to block access to sensitive files. On case-insensitive file systems such as Windows, attackers can bypass restrictions using mixed-case paths and read protected configuration files. This vulnerability is fixed in 3.5.5.

Score

CVSS 3.1 7.5 High

Status

Analyzed - security-advisories@github.com

Published

2026-02-10

Last modified

2026-02-10

Weaknesses

CWE-22

Affected products

• Siyuan (B3log)
• Siyuan (Siyuan-note)

References

• https://github.com/siyuan-note/siyuan/releases/tag/v3.5.5
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-f72r-2h5j-7639