Containerd has image-pull DoS via crafted OCI index graph amplification (CVE-2026-53493) | HOL Guard CVE

Medium · CVSS 6.9CVE-2026-53493

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

Answer in brief

CVE-2026-53493 records a Medium severity (CVSS 6.9) vulnerability in Containerd has image-pull DoS via crafted OCI index graph amplification. The current sources do not mark it as known exploited. The current feed maps containerd/containerd (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.9
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 6.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps containerd/containerd (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
containerd/containerdgeneric	>=2.0.0 <2.0.13 \|\| <1.7.36 \|\| >=2.1.0 <2.2.9 \|\| >=2.3.0 <2.3.6 \|\| = 2.4.0	1.7.36, 2.0.13, 2.2.9, 2.3.6

Recommended response

Check inventory. Check lockfiles and deployed manifests for containerd/containerd.
Review the reported fix. Update containerd/containerd to 1.7.36 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

GitHub security advisorygithub.com

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.