Path Traversal in Golang Go
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 · last modified .
CVSS v3 metric
CVSS v3 base score 3.8 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (14.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 14.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Golang Go
- Go Standard Library OS — versions 0, 1.24.0-0
Weakness classification (CWE)
References
- go.dev/cl/670036 (Product, Patch)
- go.dev/issue/73555 (Issue Tracking, Vendor Advisory)
- groups.google.com/g/golang-announce/c/UZoIkUT367A/m/5WDxKizJAQAJ (Mailing List, Release Notes)
- pkg.go.dev/vuln/GO-2026-4403 (Issue Tracking, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-22873?
- CVE-2025-22873 is a low-severity vulnerability in Golang Go, classified under Relative Path Traversal. CVSS score: 3.8/10. Published 2026-02-04.
- How severe is CVE-2025-22873?
- Low severity. CVSS v3 base score is 3.8 out of 10.