CVE-2025-22873
Unknown Unknown - Not Provided
Directory Traversal in Go os.Root Allows Parent Directory Access

Publication date: 2026-02-04

Last updated on: 2026-02-10

Assigner: Go Project

Description
It was possible to improperly access the parent directory of an os.Root by opening a filename ending in "../". For example, Root.Open("../") would open the parent directory of the Root. This escape only permits opening the parent directory itself, not ancestors of the parent or files contained within the parent.
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Meta Information
Published
2026-02-04
Last Modified
2026-02-10
Generated
2026-06-16
AI Q&A
2026-02-05
EPSS Evaluated
2026-06-15
NVD
CVE-2025-22873
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
golang go to 1.23.9 (exc)
golang go From 1.24.0 (inc) to 1.24.3 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-23 The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory.
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Executive Summary

This vulnerability allows improper access to the parent directory of an os.Root by opening a filename that ends with "../". For example, using Root.Open("../") would open the parent directory of the Root directory. However, this escape only permits opening the immediate parent directory itself, not any higher-level ancestor directories or files contained within the parent directory.

Impact Analysis

The vulnerability could allow an attacker or unauthorized user to access the parent directory of a restricted root directory, potentially exposing directory contents that were intended to be protected. Although the access is limited to the immediate parent directory and does not extend to ancestors or files within the parent, this could still lead to information disclosure or unauthorized directory traversal.

Compliance Impact

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