漏洞信息
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Vulnerability Title
EdgeChat before 2.20.3 Missing Authentication for Attachment Download via GET /files/:key
Vulnerability Description
EdgeChat before 2.20.3 contains a missing authentication vulnerability in the GET /files/:key route that allows unauthenticated or banned users to download decrypted public-channel attachments because canAccessFile() accepts a null user id. Attackers holding an attachment object key can omit or supply an invalid token to retrieve plaintext attachments without a session or channel membership.
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Vulnerability Type
关键功能的认证机制缺失