{"cve":"CVE-2021-20206","nvd":{"published":"2021-03-26T22:15:12.617","modified":"2026-06-17T03:33:28.287","status":"Modified","description":"An improper limitation of path name flaw was found in containernetworking/cni in versions before 0.8.1. When specifying the plugin to load in the 'type' field in the network configuration, it is possible to use special elements such as \"../\" separators to reference binaries elsewhere on the system. This flaw allows an attacker to execute other existing binaries other than the cni plugins/types, such as 'reboot'. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","score":7.2},"cwes":["CWE-22","CWE-20"],"references":["https://bugzilla.redhat.com/show_bug.cgi?id=1919391","https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMCONTAINERNETWORKINGCNIPKGINVOKE-1070549","https://bugzilla.redhat.com/show_bug.cgi?id=1919391","https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMCONTAINERNETWORKINGCNIPKGINVOKE-1070549"],"products":["linuxfoundation:container_network_interface"],"source":"nvd","synced_at":"2026-10-19T21:17:01.373894544+00:00"},"epss":{"cve":"CVE-2021-20206","score":0.01525,"percentile":0.74671,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-xjqr-g762-pxwp","url":"https://osv.dev/vulnerability/GHSA-xjqr-g762-pxwp","summary":"containernetworking/cni improper limitation of path name","modified":"2026-09-10T03:49:01.035847321Z","packages":[{"ecosystem":"Go","name":"github.com/containernetworking/cni","purl":"pkg:golang/github.com/containernetworking/cni","ranges":["<0.8.1"],"fixed":["0.8.1"]}]},{"id":"GO-2022-0230","url":"https://osv.dev/vulnerability/GO-2022-0230","summary":"Improper limitation of path name in github.com/containernetworking/cni","modified":"2026-03-13T21:56:25.241209Z","packages":[{"ecosystem":"Go","name":"github.com/containernetworking/cni","purl":"pkg:golang/github.com/containernetworking/cni","ranges":["<0.8.1"],"fixed":["0.8.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}