{"cve":"CVE-2026-46680","nvd":{"published":"2026-07-01T18:16:32.853","modified":"2026-07-03T04:17:53.813","status":"Analyzed","description":"containerd is an open-source container runtime. In versions prior to 1.7.32, 2.0.9, 2.2.4 and 2.3.1, containers launched with a numeric User directive that cannot be parsed as a 32-bit integer are incorrectly treated as a username, leading to runAsNonRoot evasion. If a crafted image provides an /etc/passwd file mapping this large numeric string to root, the container ultimately runs as root (UID 0). This allows the Kubernetes runAsNonRoot restriction to be bypassed, causing unexpected behavior for environments that require containers to run as a non-root user. This issue has been fixed in versions 1.7.32, 2.0.9, 2.2.4 and 2.3.1.","cvss_v4":{"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":7.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-269"],"references":["https://github.com/containerd/containerd/security/advisories/GHSA-fqw6-gf59-qr4w"],"products":["linuxfoundation:containerd"],"source":"nvd","synced_at":"2026-10-19T22:42:16.820116992+00:00"},"epss":{"cve":"CVE-2026-46680","score":0.00163,"percentile":0.05457,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-fqw6-gf59-qr4w","url":"https://osv.dev/vulnerability/GHSA-fqw6-gf59-qr4w","summary":"containerd user ID handling bypass allows runAsNonRoot evasion","modified":"2026-09-10T03:51:05.484639283Z","packages":[{"ecosystem":"Go","name":"github.com/containerd/containerd","purl":"pkg:golang/github.com/containerd/containerd","ranges":[">=1.7.27 <1.7.32"],"fixed":["1.7.32"]},{"ecosystem":"Go","name":"github.com/containerd/containerd/v2","purl":"pkg:golang/github.com/containerd/containerd/v2","ranges":[">=2.0.4 <2.0.9"],"fixed":["2.0.9"]},{"ecosystem":"Go","name":"github.com/containerd/containerd/v2","purl":"pkg:golang/github.com/containerd/containerd/v2","ranges":[">=2.1.0-beta.0 <2.2.4"],"fixed":["2.2.4"]},{"ecosystem":"Go","name":"github.com/containerd/containerd/v2","purl":"pkg:golang/github.com/containerd/containerd/v2","ranges":[">=2.3.0-beta.0 <2.3.1"],"fixed":["2.3.1"]}]},{"id":"GO-2026-5378","url":"https://osv.dev/vulnerability/GO-2026-5378","summary":"containerd user ID handling bypass allows runAsNonRoot evasion in github.com/containerd/containerd","modified":"2026-06-30T02:44:24.885498352Z","packages":[{"ecosystem":"Go","name":"github.com/containerd/containerd","purl":"pkg:golang/github.com/containerd/containerd","ranges":[">=1.7.27 <1.7.32"],"fixed":["1.7.32"]},{"ecosystem":"Go","name":"github.com/containerd/containerd/v2","purl":"pkg:golang/github.com/containerd/containerd/v2","ranges":[">=2.0.4 <2.0.9",">=2.1.0-beta.0 <2.2.4",">=2.3.0-beta.0 <2.3.1"],"fixed":["2.0.9","2.2.4","2.3.1"]}]}],"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."]}