CVE-2026-57855

EUVD-2026-43575
Cockpit CMS contains a missing authorization vulnerability in the Bucket file storage API (/system/buckets/api). The api() method in modules/System/Controller/Buckets.php executes bucket commands (ls, upload, removefiles, rename, createfolder) without performing any ACL or role check. Any authenticated user, regardless of role, can perform all bucket operations on any named bucket, including buckets intended for admin use only.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.8 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 20%
Common Weakness Enumeration
References
https://gist.github.com/sermikr0/821c4edd3c34e98a62a50b07707785bd
https://github.com/Cockpit-HQ/Cockpit/commit/dde2d1d74f5f4e11de42a298918ea8c9684f932c
https://github.com/cockpit-hq/cockpit
https://www.vulncheck.com/advisories/cockpit-cms-missing-authorization-in-bucket-file-storage-api
https://gist.github.com/sermikr0/821c4edd3c34e98a62a50b07707785bd