CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NCVE-2026-33476
High (7.5) in b3log siyuan. EPSS 3.3% chance of exploitation in the next 30 days.
SiYuan is a personal knowledge management system. Prior to version 3.6.2, the Siyuan kernel exposes an unauthenticated file-serving endpoint under `/appearance/*filepath.` Due to improper path sanitization, attackers can perform directory traversal and read arbitrary files accessible to the server process. Authentication checks explicitly exclude this endpoint, allowing exploitation without valid credentials. Version 3.6.2 fixes this issue.
Severity
- EPSS
- 3.3% chance of exploitation in the next 30 days; higher than 88% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-22, CWE-73
- Published
- Modified
- Record from
- the NVD, synced
Affected
- b3log:siyuan
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-hhgj-gg9h-rjp7 | Go | github.com/siyuan-note/siyuan/kernel | <=0.0.0-20260317012524-fe4523fff2c8 | no fix published |
| GO-2026-4802 | Go | github.com/siyuan-note/siyuan/kernel | all versions | no fix published |