CVE-2026-45147 — SiYuan is an open-source personal knowledge management

title: CVE-2026-45147 - SiYuan Unauthenticated Configuration Write
id: scw-2026-05-14-ai-1
status: experimental
level: high
description: |
  Detects the specific API endpoint POST /api/tag/getTag being called with a 'sort' parameter. This is the vulnerable endpoint in SiYuan versions prior to 3.7.0 that allows any authenticated user to modify workspace configuration by writing to conf.json, enabling persistence or further compromise.
author: SCW Feed Engine (AI-generated)
date: 2026-05-14
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-45147/
tags:
  - attack.persistence
  - attack.t1505.003
logsource:
    category: webserver
detection:
  selection:
      cs-method:
          - 'POST'
      uri:
          - '/api/tag/getTag'
  selection_base:
      cs-uri-query|contains:
          - 'sort='
  condition: selection AND selection_base
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse