GHSA-hhgj-gg9h-rjp7 · Severity: high · Ecosystem: go — Siyuan has an Unauthenticated Arbitrary File Read via Path Traversal
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.
Conclusion & alert: CVE-2026-33476 is rated High Exploit Risk (65.2/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.35%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-27 | 0.33% | 0.35% | +0.02% |
| 2 | 2026-05-01 | 0.24% | 0.33% | +0.09% |
| 3 | 2026-04-21 | — | 0.24% | — |
Full EPSS history (6 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
GHSA-hhgj-gg9h-rjp7 · Severity: high · Ecosystem: go — Siyuan has an Unauthenticated Arbitrary File Read via Path Traversal