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CVE-2026-46680

HIGH
7.3
CVSS 4.0
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.

Metadata

CVE ID
CVE-2026-46680
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-05-15 21:46 UTC
Published
2026-07-01 17:40 UTC
Last updated
2026-07-01 17:40 UTC
Primary CWE
CWE-269
CWE-269: Improper Privilege Management
Vendor / Product
containerd / containerd
Sources
cve.org  ·  NVD

Severity & Metrics

7.3 HIGH CVSS 4.0
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
Affected products (1)
VendorProductPlatformVersions
containerd containerd — < 1.7.32, >= 2.0.4, < 2.0.9, >= 2.0.10, < 2.2.4, >= 2.2.5, < 2.3.1
Weakness (CWE)
CWESourceDescription
CWE-269 cna CWE-269: Improper Privilege Management
CVSS scores (1)
ScoreSeverityVersionSourceVector
7.3 HIGH 4.0 cna 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
References (1)
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