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.
Published: 2026-02-10
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-f72r-2h5j-7639 SiYuan File Read API Case Sensitivity Bypass can Lead to Path Traversal
History

Mon, 23 Feb 2026 18:00:00 +0000

Type Values Removed Values Added
First Time appeared B3log
B3log siyuan
CPEs cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:*
Vendors & Products B3log
B3log siyuan

Thu, 12 Feb 2026 11:30:00 +0000

Type Values Removed Values Added
First Time appeared Siyuan
Siyuan siyuan
Vendors & Products Siyuan
Siyuan siyuan

Tue, 10 Feb 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 10 Feb 2026 18:15:00 +0000

Type Values Removed Values Added
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.
Title SiYuan has a File Read Interface Case Bypass Vulnerability
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-02-10T19:17:41.722Z

Reserved: 2026-02-09T17:41:55.858Z

Link: CVE-2026-25992

cve-icon Vulnrichment

Updated: 2026-02-10T19:16:22.911Z

cve-icon NVD

Status : Analyzed

Published: 2026-02-10T18:16:38.807

Modified: 2026-02-23T17:58:09.347

Link: CVE-2026-25992

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-12T11:19:47Z

Weaknesses