CVE-2026-57855

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.

CVSS 4.0

8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-25)

CWE

CWE-284

Published

2026-07-13

Modified

2026-10-24

Record from

the NVD, synced 2026-10-25

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

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