Input validation error in containerd - CVE-2026-53488
Published: June 19, 2026
Vulnerability identifier: #VU134886
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-53488
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary commands on the host.
The vulnerability exists due to improper input validation in the containerd CRI plugin when propagating image configuration labels to containers. A remote attacker can supply a crafted image with malicious labels to execute arbitrary commands on the host.
Exploitation requires a plugin that consumes container labels for some operations.
Affected software
containerd
openEuler
Fedora
containerd
Multicluster Engine for Kubernetes
openEuler
Fedora
containerd
Multicluster Engine for Kubernetes
How to mitigate CVE-2026-53488
Install security update from vendor's website.
containerd - addressed in versions 1.7.33, 2.0.10, 2.1.9, 2.2.5, 2.3.2
containerd - addressed in versions 1.2.0-225, 1.2.0-326, 1.6.22-29
containerd - update to 2.3.2-1.fc45
Multicluster Engine for Kubernetes - update to 2.10.4
containerd - addressed in versions 1.2.0-225, 1.2.0-326, 1.6.22-29
containerd - update to 2.3.2-1.fc45
Multicluster Engine for Kubernetes - update to 2.10.4
External References
Related Security Bulletins
- Multiple vulnerabilities in containerd
- openEuler 24.03 LTS SP1 update for containerd
- openEuler 22.03 LTS SP4 update for containerd
- openEuler 20.03 LTS SP4 update for containerd
- openEuler 24.03 LTS SP3 update for containerd
- Input validation error in Multicluster Engine for Kubernetes 2.10
- openEuler 24.03 LTS SP4 update for containerd
- Fedora 45 update for containerd