Vulnerability Monitor

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CVE-2025-22873

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.

Published

2026-02-04T23:15:54.220

Last Modified

2026-02-10T15:16:40.057

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 3.8 (LOW)

Weaknesses

Type: Secondary
CWE-23

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	golang	go	< 1.23.9	Yes
Application	golang	go	< 1.24.3	Yes

References

https://go.dev/cl/670036 Patch, Product ([email protected])
https://go.dev/issue/73555 Issue Tracking, Vendor Advisory ([email protected])
https://groups.google.com/g/golang-announce/c/UZoIkUT367A/m/5WDxKizJAQAJ Mailing List, Release Notes ([email protected])
https://pkg.go.dev/vuln/GO-2026-4403 Vendor Advisory, Issue Tracking ([email protected])
http://www.openwall.com/lists/oss-security/2025/05/06/2 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)