# 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.

- Web page: https://patchblox.com/security/cve/CVE-2026-53493
- Priority: Routine
- CVSS: n/a (Moderate)
- EPSS: 0.0036
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 25, 2026
- Weakness: Uncontrolled Resource Consumption
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53493

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | containerd Debian 14 | 2.1.9+ds1-5 | [DEBIAN-CVE-2026-53493](https://patchblox.com/security/data/fix/linux/debian-cve-2026-53493.md) | Oct 10, 2026 |
| Linux | containerd amzn 2023 | 2.3.7-1.amzn2023.0.1 | [ALAS2023-2026-3273](https://patchblox.com/security/data/fix/linux/alas2023-2026-3273.md) | Nov 7, 2026 |
| Linux | containerd-debuginfo amzn 2023 | 2.3.7-1.amzn2023.0.1 | [ALAS2023-2026-3273](https://patchblox.com/security/data/fix/linux/alas2023-2026-3273.md) | Nov 7, 2026 |
| Linux | containerd-debugsource amzn 2023 | 2.3.7-1.amzn2023.0.1 | [ALAS2023-2026-3273](https://patchblox.com/security/data/fix/linux/alas2023-2026-3273.md) | Nov 7, 2026 |
| Linux | containerd-stress amzn 2023 | 2.3.7-1.amzn2023.0.1 | [ALAS2023-2026-3273](https://patchblox.com/security/data/fix/linux/alas2023-2026-3273.md) | Nov 7, 2026 |
| Linux | containerd-stress-debuginfo amzn 2023 | 2.3.7-1.amzn2023.0.1 | [ALAS2023-2026-3273](https://patchblox.com/security/data/fix/linux/alas2023-2026-3273.md) | Nov 7, 2026 |

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Data as of 2026-11-09T07:25:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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