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Vulnerability · Published Sep 25, 2026 · Assigned by GitHub_M

CVE-2026-53493Containerd has image-pull DoS via crafted OCI index graph amplification

Medium 6.9

In plain English

A medium-severity uncontrolled resource consumption in containerd from containerd. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)6.9Medium
Exploit odds (30 days)0.4%top 70.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.24containerd2.3.6-r0ALPINE-CVE-2026-53493
Alpine:v3.24docker29.8.2-r0ALPINE-CVE-2026-53493
Debian:12containerdno fix listedDEBIAN-CVE-2026-53493
Debian:13containerdno fix listedDEBIAN-CVE-2026-53493
Debian:14containerd2.1.9+ds1-5DEBIAN-CVE-2026-53493
Gogithub.com/containerd/containerd1.7.36GO-2026-6597
Gogithub.com/containerd/containerd1.7.36GHSA-pg57-6jwg-q645
Gogithub.com/containerd/containerd/v22.0.13GHSA-pg57-6jwg-q645
Gogithub.com/containerd/containerd/v22.2.9GHSA-pg57-6jwg-q645
Gogithub.com/containerd/containerd/v22.3.6GHSA-pg57-6jwg-q645
Gogithub.com/containerd/containerd/v22.4.1GHSA-pg57-6jwg-q645
Gogithub.com/containerd/containerd/v22.0.13, 2.2.9, 2.3.6, 2.4.1GO-2026-6597
Ubuntu:22.04:LTScontainerdno fix listedUBUNTU-CVE-2026-53493
Ubuntu:26.10containerdno fix listedUBUNTU-CVE-2026-53493
Ubuntu:24.04:LTScontainerd-appno fix listedUBUNTU-CVE-2026-53493
Ubuntu:26.04:LTScontainerd-appno fix listedUBUNTU-CVE-2026-53493
Ubuntu:26.10containerd-appno fix listedUBUNTU-CVE-2026-53493
Ubuntu:26.04:LTScontainerd-stableno fix listedUBUNTU-CVE-2026-53493
Ubuntu:26.10containerd-stableno fix listedUBUNTU-CVE-2026-53493

Affected products (as reported)

VendorProductVersions
containerd containerd >= 2.0.0, < 2.0.13< 1.7.36>= 2.1.0, < 2.2.9>= 2.3.0, < 2.3.6= 2.4.0

Weakness: CWE-400, CWE-770, CWE-834 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

References