CVE-2026-53493

Public on 2026-09-25

Modified on 2026-09-29

Description

containerd is an open-source container runtime. Prior to versions 1.7.36, 2.0.13, 2.2.9, 2.3.6, and 2.4.1, a crafted OCI index graph can force very high CPU/memory usage during PullImage (before container start), causing long ContainerCreating stalls and, at larger sizes, node/runtime instability. Versions 1.7.36, 2.0.13, 2.2.9, 2.3.6, and 2.4.1 fix the issue.

Severity

Medium

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CVSS v3 Base Score

6.5

See breakdown

Affected Packages

Platform	Package	Status
Amazon Linux 2 - Aws-nitro-enclaves-cli Extra	containerd	Pending Fix
Amazon Linux 2 - Docker Extra	containerd	Pending Fix
Amazon Linux 2 - Ecs Extra	containerd	Pending Fix
Amazon Linux 2023	containerd	Pending Fix
Amazon Linux 2027 Preview	containerd	Pending Fix

CVSS Scores

	Score Type	Score	Vector
Amazon Linux	CVSSv3	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

FAQs regarding Amazon Linux ALAS/CVE Severity Red Hat: CVE-2026-53493 Mitre: CVE-2026-53493