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

CVE-2026-53493 affects azl3 containerd2 2.3.4-1 on Azure Linux 3.0. EPSS 0.00356 (percentile 0.27054), scored 2026-10-03. Fixed version: 0.120.0-r0. Fixed version: 0.75.0-r0. Fixed version: 0.120.0-r0. Fixed version: 5.6.0-r0. Fixed version: 5.6.0-r0. Fixed version: 0.75.0-r0.

Published 2026-10-05 08:15:51.372372+00:00

CVE

CVE-2026-53493

Product

azl3 containerd2 2.3.4-1 on Azure Linux 3.0

CCR priority

0.1 /100 (P5)

EPSS

0.00356 · percentile 0.27045 · 2026-10-04

KEV

no

Affected products

• azl3 containerd2 2.3.4-1 on Azure Linux 3.0
• azl3 moby-containerd-cc 1.7.7-17 on Azure Linux 3.0
• grype · Fixed version: 0.120.0-r0
• trivy · Fixed version: 0.75.0-r0
• grype-fips · Fixed version: 0.120.0-r0
• docker-compose-fips · Fixed version: 5.6.0-r0
• docker-compose · Fixed version: 5.6.0-r0
• trivy-fips · Fixed version: 0.75.0-r0

Provenance

• Microsoft MSRC Security Update Guide (CVRF) · Source record · observed 2026-10-04 07:08:49.022374+00:00 UTC
• OSV.dev · Source record · observed 2026-10-04 23:49:35.786600+00:00 UTC
• OSV.dev · Source record · observed 2026-10-04 23:49:35.786600+00:00 UTC
• OSV.dev · Source record · observed 2026-10-04 23:49:35.786600+00:00 UTC
• OSV.dev · Source record · observed 2026-10-04 23:49:35.786600+00:00 UTC
• OSV.dev · Source record · observed 2026-10-04 23:49:35.786600+00:00 UTC
• OSV.dev · Source record · observed 2026-10-04 23:49:35.786600+00:00 UTC
• FIRST EPSS daily exploit-probability · Source record · observed 2026-10-05 08:16:32.814186+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-53493.html