CVE-2026-53493— Containerd has image-pull DoS via crafted OCI index graph amplification
Quick assessment
Affected
containerd containerd
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
containerd 是一个开源的容器运行时。在版本 1.7.36、2.0.13、2.2.9、2.3.6 和 2.4.1 之前，一个精心构造的 OCI 索引图谱（OCI index graph）可以在 PullImage（容器启动之前）阶段导致极高的 CPU 和内存使用率，从而引发长时间的 ContainerCreating 挂起，并在图片较大时导致节点或运行时不稳定。版本 1.7.36、2.0.13、2.2.9、2.3.6 和 2.4.1 修复了该问题。
Possible ATT&CK Techniques 1 AI
T1496 · Resource HijackingAffected Version Matrix 5
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| containerd | containerd | >= 2.0.0, < 2.0.13 |
affected |
< 1.7.36 |
affected | ||
>= 2.1.0, < 2.2.9 |
affected | ||
>= 2.3.0, < 2.3.6 |
affected | ||
= 2.4.0 |
affected |
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I. Basic Information for CVE-2026-53493
Vulnerability Information
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Vulnerability Title
Containerd has image-pull DoS via crafted OCI index graph amplification
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| containerd | containerd | >= 2.0.0, < 2.0.13 | - |
|
II. Public POCs for CVE-2026-53493
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-53493 (1)
IV. Related Vulnerabilities
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V. Comments for CVE-2026-53493
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