Low 3.8Published Feb 4, 2026

CVE-2025-22873It was possible to improperly access the parent directory of an os.Root by opening a filename ending in "../".

Updated under an hour ago (2026-10-19 09:00 UTC)

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It affects golang go. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 3.8 LOW (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Weakness (CWE): CWE-23
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

golang go golang:go	before 1.23.9; from 1.24.0 before 1.24.3	NVD

References

https://go.dev/cl/670036patch, product
https://go.dev/issue/73555issue-tracking, vendor-advisory
https://groups.google.com/g/golang-announce/c/UZoIkUT367A/m/5WDxKizJAQAJmailing-list, release-notes
https://pkg.go.dev/vuln/GO-2026-4403issue-tracking, vendor-advisory
http://www.openwall.com/lists/oss-security/2025/05/06/2mailing-list, third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.