containerd user ID handling bypass allows runAsNonRoot evasion (containerd containerd)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.16 % · percentile 5 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD 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.
Weaknesses (CWE)
- CWE-269 — Improper Privilege Management
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 4.0 | HIGH 7.3 | 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 | GitHub_M |
| CVSS 4.0 | HIGH 7.3 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD · security-advisories@github.com (Secondary) |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
Advisories
- GHSA-fqw6-gf59-qr4w — containerd user ID handling bypass allows runAsNonRoot evasion
- GO-2026-5378 — containerd user ID handling bypass allows runAsNonRoot evasion in github.com/containerd/containerd
European references
- ENISA EUVD · EUVD-2026-41103
- GCVE · GCVE-0-2026-46680
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1336 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:linuxfoundation:containerd:*:*:*:*:*:*:*:*≥ 1.7.27 < 1.7.32cpe:2.3:a:linuxfoundation:containerd:*:*:*:*:*:*:*:*≥ 2.0.4 < 2.0.9cpe:2.3:a:linuxfoundation:containerd:*:*:*:*:*:*:*:*≥ 2.1.0 < 2.2.4cpe:2.3:a:linuxfoundation:containerd:*:*:*:*:*:*:*:*≥ 2.3.0 < 2.3.1
Affected products
| Product | Versions |
|---|---|
| containerd · containerd | affected < 1.7.32 ; affected >= 2.0.4, < 2.0.9 ; affected >= 2.0.10, < 2.2.4 ; affected >= 2.2.5, < 2.3.1 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |