CVE-2026-53493

Containerd has image-pull DoS via crafted OCI index graph amplification

CVE-2026-53493 is fixed in 5 products on 1 platform, first by DEBIAN-CVE-2026-53493, released October 10, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

n/a

Moderate

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0036

29th percentile

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.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
containerd · Debian 14	2.1.9+ds1-5	DEBIAN-CVE-2026-53493	Oct 10, 2026
containerd · amzn 2023	2.3.7-1.amzn2023.0.1	ALAS2023-2026-3273	Nov 7, 2026
containerd-debuginfo · amzn 2023	2.3.7-1.amzn2023.0.1	ALAS2023-2026-3273	Nov 7, 2026
containerd-debugsource · amzn 2023	2.3.7-1.amzn2023.0.1	ALAS2023-2026-3273	Nov 7, 2026
containerd-stress · amzn 2023	2.3.7-1.amzn2023.0.1	ALAS2023-2026-3273	Nov 7, 2026
containerd-stress-debuginfo · amzn 2023	2.3.7-1.amzn2023.0.1	ALAS2023-2026-3273	Nov 7, 2026

Details

Published
September 25, 2026
Weakness
Uncontrolled Resource Consumption
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53493

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