CVE-2026-57856 — Cockpit CMS contains a path traversal vulnerability in the...

windowsCWE-22 高危 PHP CVE-2026-57856

发布于：1小时前📖 4分钟👁️ 1 次阅读

CVE-2026-57856 漏洞深度分析

漏洞概述

CVE 编号： CVE-2026-57856
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-22
漏洞状态： Deferred
发布时间： 2026-07-13T23:16:46.883
最后更新： 2026-07-14T16:42:11.910

漏洞描述

Cockpit CMS contains a path traversal vulnerability in the Bucket file storage API (/system/buckets/api). The api() method in modules/System/Controller/Buckets.php sanitizes the bucket name with preg_replace('/[^a-zA-Z0-9-_\.]/','', $bucket), which permits '..' and '../' sequences. The sanitized value is interpolated into a Flysystem path as uploads://buckets/{bucket}. Flysystem's WhitespacePathNormalizer resolves 'buckets/..' to the empty string (the uploads storage root) without raising PathTraversalDetected because the '..' has a preceding component to consume. An authenticated low-privileged user can send a crafted request with a '../' bucket name to list, upload, and delete files across all buckets, including those belonging to other users or roles

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

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

参考链接

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