EverShop 2.0.1 allows a remote unauthenticated attacker to upload arbitrary files and create directories via the /api/images endpoint. The endpoint is accessible without authentication by default, and server-side validation of uploaded files is insufficient. This can be abused to upload arbitrary content (including non-image files) which could impersonate user/admin login panels (exfiltrating credentials) and to perform a denial-of-service attack by exhausting disk space.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
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