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CVE-2026-125113— XRootD: Path traversal in directory listing allows access to the parent directory via trailing ".." pattern

Quick assessment

Affected
xrootd xrootd
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

XRootD 项目提供了一套高性能、容错且安全的解决方案，用于处理分布在多个存储资源上的海量数据。在 5.9.2 版本之前，XRootD 位于 中的 函数仅在两个点（..）后紧跟斜杠（/）时才会拒绝父目录组件，而不会拒绝位于路径末尾的两个点组件。未认证的攻击者可以在 命令或 HTTP 请求中，向已导出的路径附加 ，从而绕过 目录范围限制，导致在 的父目录中泄露目录和文件名。已验证的攻击利用方式无法下载文件或泄露文件内容。该问题已在 5.9.2 版本中修复。

CVSS 5.3 · Medium
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I. Basic Information for CVE-2026-125113

Vulnerability Information
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Vulnerability Title
XRootD: Path traversal in directory listing allows access to the parent directory via trailing ".." pattern
Source: CVE Program / CVE List V5
Vulnerability Description
The XRootD project provides a high-performance, fault-tolerant, and secure solution for handling large amounts of data distributed across multiple storage resources. Prior to version 5.9.2, XRootD's rpCheck() function in src/XrdXrootd/XrdXrootdXeq.cc rejects a parent-directory component only when two dots are followed by a slash and does not reject a terminal two-dot component. An unauthenticated attacker can append /.. to an exported path in xrdfs ls or an HTTP PROPFIND request, bypass the all.export directory scope, and cause directory and filename enumeration in the parent directory under oss.localroot. The demonstrated vector does not permit file download or disclose file contents. This issue is fixed in version 5.9.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
xrootd xrootd < 5.9.2 -

II. Public POCs for CVE-2026-125113

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III. Intelligence Information for CVE-2026-125113

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Other References for CVE-2026-125113 (3)

IV. Related Vulnerabilities

Same weakness: CWE-20