CVE-2026-55825— Contao 路径遍历漏洞

Contao: Possible path traversal in job download URIs

Contao is an Open Source CMS. In versions 5.7.0 through 5.7.6, an authenticated backend user who can access one job can request an attachment identifier containing ../ segments and make the job attachment download endpoint read a file from another job directory inside var/job-attachments. The controller authorizes only the jobUuid route parameter. The later attachment lookup joins that authorized job UUID with the attacker-controlled identifier, then passes the combined path to the virtual filesystem. VirtualFilesystem::resolve() canonicalizes the whole path and only rejects paths that escape the filesystem mount, so authorized-job/../victim-job/debug_log.csv becomes victim-job/debug_log.csv. This is a cross-job authorization bypass for known job attachment paths. It is not a practical brute-force against unknown jobs because job directories are UUID v4 values.

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

对路径名的限制不恰当(路径遍历)

Contao 路径遍历漏洞

Contao是Contao组织开源的一套采用PHP开发的开源内容管理系统(CMS)。该系统支持搜索引擎、权限管理和CSS框架等。 Contao 5.7.0至5.7.6版本存在路径遍历漏洞，该漏洞源于对附件标识符的路径验证不当，可能导致经过身份验证的后端用户通过路径遍历读取其他作业目录中的文件，造成跨作业授权绕过。

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