Vulnerability · Published Feb 10, 2026 · Assigned by GitHub_M
CVE-2026-25992SiYuan has a File Read Interface Case Bypass Vulnerability
High 7.5
In plain English
A high-severity path traversal in siyuan from siyuan-note. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.6%top 51.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/siyuan-note/siyuan/kernel | no fix listed | GO-2026-4386 |
| Go | github.com/siyuan-note/siyuan/kernel | no fix listed | GHSA-f72r-2h5j-7639 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| siyuan-note | siyuan | < 3.5.5 |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
References
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-f72r-2h5j-7639 x_refsource_CONFIRM
- https://github.com/siyuan-note/siyuan/releases/tag/v3.5.5 x_refsource_MISC