SiYuan: Publish Reader Can Arbitrarily Delete Attribute View Files via removeUnusedAttributeView API

SiYuan is an open-source personal knowledge management system. In versions 3.6.3 and below, the /api/av/removeUnusedAttributeView endpoint is protected only by generic authentication that accepts publish-service RoleReader tokens. The handler passes a caller-controlled id directly to a model function that unconditionally deletes the corresponding attribute view file from the workspace without verifying that the caller has write privileges or that the target attribute view is actually unused. An authenticated publish-service reader can permanently delete arbitrary attribute view definitions by extracting publicly exposed data-av-id values from published content, causing breakage of database views and workspace rendering until manually restored. This issue has been fixed in version 3.6.4.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

授权机制不恰当

SiYuan 安全漏洞

SiYuan是SiYuan开源的一个个人知识管理系统。 SiYuan 3.6.3及之前版本存在安全漏洞，该漏洞源于/api/av/removeUnusedAttributeView端点仅受通用身份验证保护，且处理程序将调用者控制的id直接传递给模型函数，导致未经写权限验证即删除属性视图文件，经过身份验证的发布服务读者可永久删除任意属性视图定义。

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