CVE-2026-25992

Published: Feb 10, 2026Modified: Jun 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitability: 3.9 / Impact: 3.6

Source: security-advisories@github.com (Secondary)

Description

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.

Affected (1)

Products: B3log: Siyuan

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
B3log Siyuan	Before 3.5.5

Related CWEs

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References (2)

https://github.com/siyuan-note/siyuan/releases/tag/v3.5.5

Source: security-advisories@github.com

ProductRelease Notes

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-f72r-2h5j-7639

Source: security-advisories@github.com

ExploitVendor Advisory

Timeline

No history available yet.