CVE-2026-57855 漏洞深度分析

漏洞概述

CVE 编号： CVE-2026-57855
CVSS 评分： 8.7（HIGH）
CVSS 向量： 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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE 分类： CWE-284
漏洞状态： Received
发布时间： 2026-07-13T23:16:46.743
最后更新： 2026-07-14T13:18:58.887

漏洞描述

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.

影响分析

此漏洞的具体影响取决于实际利用场景。"

修复建议

1. 及时关注厂商发布的安全更新和补丁
2. 升级受影响组件到最新版本
3. 如无法立即升级，参考厂商提供的临时缓解措施
4. 加强网络访问控制和监控

参考链接

1. https://gist.github.com/sermikr0/821c4edd3c34e98a62a50b07707785bd
2. https://github.com/Cockpit-HQ/Cockpit/commit/dde2d1d74f5f4e11de42a298918ea8c9684f932c
3. https://github.com/cockpit-hq/cockpit
4. https://www.vulncheck.com/advisories/cockpit-cms-missing-authorization-in-bucket-file-storage-api
5. https://gist.github.com/sermikr0/821c4edd3c34e98a62a50b07707785bd