CVE-2025-22873 - CVE House
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Status published Unknown CVE-2025-22873

Improper access to parent directory of root in os

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Dan Sebastian Thrane of SDU eScience Center

References

More from Go standard library

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CVE-2025-68121
Unexpected session resumption in crypto/tls
Unknown 0
CVE-2025-61730
Handshake messages may be processed at the incorrect encryption level in crypto/tls
Unknown 0
CVE-2025-61729
Excessive resource consumption when printing error string for host certificate validation in crypto/x509
Unknown 0
CVE-2025-61728
Excessive CPU consumption when building archive index in archive/zip
Unknown 0
CVE-2025-61727
Improper application of excluded DNS name constraints when verifying wildcard names in crypto/x509
Unknown 0

Affected Vendor

Go standard library

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Affected Software

os
Vulnerable Versions:
0, 1.24.0-0

Timeline

Official Publish: February 4th, 2026
Last Modified: February 5th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.