CVE-2026-49233

Analyzed Analyzed - Analysis Complete

Routinator Path Traversal in rsync URI Handling

Publication date: 2026-06-08

Last updated on: 2026-06-12

Assigner: NLnet Labs

Description

Routinator does not properly check the module component of rsync URIs, which are used to create the file system paths for the Routinator cache. This allows for path traversal by having a module name containing .., potentially providing an attacker access to the entire Routinator rsync cache.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-06-08

Last Modified

2026-06-12

Generated

2026-06-28

AI Q&A

2026-06-08

EPSS Evaluated

2026-06-27

NVD

CVE-2026-49233

EUVD

EUVD-2026-35063

Affected Vendors & Products

Vendor	Product	Version / Range
nlnetlabs	routinator	to 0.15.2 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-22	The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Attack-Flow Graph

Executive Summary

This vulnerability in Routinator involves improper validation of the module component in rsync URIs. Specifically, Routinator does not correctly check for path traversal characters like ".." in the module name, which are used to build file system paths for its cache.

Because of this, an attacker can exploit the vulnerability by crafting a module name containing ".." to traverse directories and potentially gain access to the entire Routinator rsync cache.

Impact Analysis

The impact of this vulnerability is that an attacker could gain unauthorized access to the entire Routinator rsync cache by exploiting the path traversal flaw.

This unauthorized access could lead to exposure of sensitive cached data, potentially compromising the security and integrity of the system using Routinator.

Mitigation Strategies

To mitigate this vulnerability, you should upgrade Routinator to version 0.15.2 or later.

Compliance Impact

The provided information does not specify how this vulnerability impacts compliance with common standards and regulations such as GDPR or HIPAA.

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