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

Status: published. Published: 2026-11-09. Updated: 2026-11-09.

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.

## Remediation

- fix: xrootd (PyPI): OSV reports a fixed version 5.9.2. Check the advisory for supported release branches. (source: OSV GHSA-vj8v-p5vw-m6v5) — https://github.com/advisories/GHSA-vj8v-p5vw-m6v5

## Affected products and versions

- xrootd / xrootd: < 5.9.2 (affected). Source: CNA: GitHub_M
-  / xrootd (xrootd): 4.10.0 (affected, PyPI); 4.11.0 (affected, PyPI); 4.11.1 (affected, PyPI); 4.11.2 (affected, PyPI); 4.11.3 (affected, PyPI); 4.12.0 (affected, PyPI); 4.12.2 (affected, PyPI); 4.12.3 (affected, PyPI); 4.12.4 (affected, PyPI); 4.12.5 (affected, PyPI); 4.12.6 (affected, PyPI); 4.12.7 (affected, PyPI); 4.8.4 (affected, PyPI); 4.8.5 (affected, PyPI); 4.9.0 (affected, PyPI); 4.9.1 (affected, PyPI); 5.0.0 (affected, PyPI); 5.0.1 (affected, PyPI); 5.0.2 (affected, PyPI); 5.0.3 (affected, PyPI); 5.1.1 (affected, PyPI); 5.2.0 (affected, PyPI); 5.3.0 (affected, PyPI); 5.3.1 (affected, PyPI); 5.3.2 (affected, PyPI); 5.3.3 (affected, PyPI); 5.3.4 (affected, PyPI); 5.4.0 (affected, PyPI); 5.4.1 (affected, PyPI); 5.4.2 (affected, PyPI); 5.4.3 (affected, PyPI); 5.5.0 (affected, PyPI); 5.5.1 (affected, PyPI); 5.5.2 (affected, PyPI); 5.5.3 (affected, PyPI); 5.5.4 (affected, PyPI); 5.5.5 (affected, PyPI); 5.6.0 (affected, PyPI); 5.6.1 (affected, PyPI); 5.6.2 (affected, PyPI); 5.6.3 (affected, PyPI); 5.6.4 (affected, PyPI); 5.6.5 (affected, PyPI); 5.6.6 (affected, PyPI); 5.6.7 (affected, PyPI); 5.6.8 (affected, PyPI); 5.6.9 (affected, PyPI); 5.7.0 (affected, PyPI); 5.7.1 (affected, PyPI); 5.7.2 (affected, PyPI); 5.7.3 (affected, PyPI); 5.8.0 (affected, PyPI); 5.8.1 (affected, PyPI); 5.8.2 (affected, PyPI); 5.8.3 (affected, PyPI); 5.8.4 (affected, PyPI); 5.9.0 (affected, PyPI); 5.9.1 (affected, PyPI); Ecosystem version events: introduced 0; fixed 5.9.2. Source: OSV GHSA-vj8v-p5vw-m6v5

## Severity and prioritization

- CVSS 3.1: 5.3 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N; source: CNA: GitHub_M

- CVSS 3.1: 5.3 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N; source: NVD: security-advisories@github.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-20, CWE-22

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/xrootd/xrootd/security/advisories/GHSA-vj8v-p5vw-m6v5 (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/xrootd/xrootd/commit/0b96a52e2439aecb74f3b3eef7e782bbfaf4a64a (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/xrootd/xrootd/releases/tag/v5.9.2 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/xrootd/xrootd/commit/0b96a52e2439aecb74f3b3eef7e782bbfaf4a64a (security-advisories@github.com)

- https://github.com/xrootd/xrootd/releases/tag/v5.9.2 (security-advisories@github.com)

- https://github.com/xrootd/xrootd/security/advisories/GHSA-vj8v-p5vw-m6v5 (security-advisories@github.com)

- https://github.com/advisories/GHSA-vj8v-p5vw-m6v5 (OSV / GitHub Security Advisories; advisory)

- https://osv.dev/vulnerability/GHSA-vj8v-p5vw-m6v5 (OSV / GitHub Security Advisories; osv)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-125113; retrieved 2026-11-09; source updated 2026-11-09

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-125113; retrieved 2026-11-10; source updated 2026-11-09

- OSV / GitHub Security Advisories: https://osv.dev/vulnerability/GHSA-vj8v-p5vw-m6v5; retrieved 2026-11-09; source updated 2026-11-09

Revision: 3355a4e840384da4b06848f8777c2c83c2c9cbe12e15563d4462ce23bfd2fb5d

Canonical: https://y2.dev/cve/CVE-2026-125113

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