halo v2.20.17 and before is vulnerable to server-side request forgery (SSRF) in /apis/uc.api.storage.halo.run/v1alpha1/attachments/-/upload-from-url.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
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