{"id":"CVE-2026-57855","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-57855","generatedAt":"2026-10-28T03:41:56.762Z","title":"Cockpit CMS contains a missing authorization vulnerability in the Bucket file storage API (/system/buckets/api).","description":"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.","published":"2026-07-13T23:16:47.000Z","lastModified":"2026-10-24T22:10:00.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":8.7,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-284"],"affected":[],"epss":{"score":0.00523,"percentile":0.44199,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://gist.github.com/sermikr0/821c4edd3c34e98a62a50b07707785bd","source":"disclosure@vulncheck.com"},{"url":"https://github.com/Cockpit-HQ/Cockpit/commit/dde2d1d74f5f4e11de42a298918ea8c9684f932c","source":"disclosure@vulncheck.com"},{"url":"https://github.com/cockpit-hq/cockpit","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/cockpit-cms-missing-authorization-in-bucket-file-storage-api","source":"disclosure@vulncheck.com"},{"url":"https://gist.github.com/sermikr0/821c4edd3c34e98a62a50b07707785bd","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-57855","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}