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Advisory record · GHSA-pg57-6jwg-q645

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

CVSS 6.9 MediumEPSS 0.0036 · 29th percentile

Published by the GitHub Advisory Database at 25 Sept 2026, 19:27 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/containerd/containerd/v2Go>=2.0.0, <2.0.13 || >=2.1.0, <2.2.9 || >=2.3.0, <2.3.6 || >=2.4.0, <2.4.12.0.13, 2.2.9, 2.3.6, 2.4.1
github.com/containerd/containerdGo<1.7.361.7.36
Identifiers
GHSA-pg57-6jwg-q645 · CVE-2026-53493 · GO-2026-6597
Weakness (CWE)
CWE-400 · CWE-770 · CWE-834
Tags
Published
25 Sept 2026
Updated
1 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Containerd (github.com/containerd/containerd/v2 from 2.0.0 before 2.0.13, 2.1.0 before 2.2.9, 2.3.0 before 2.3.6, and 2.4.0 before 2.4.1; and github.com/containerd/containerd before 1.7.36) is vulnerable to unbounded CPU and memory use during image pull. A crafted OCI image index with deeply nested or widely fanned-out descriptors can stall the pull and strain the host, and the attacker only needs the victim to pull a malicious image reference. Upgrade to 2.0.13, 2.2.9, 2.3.6, 2.4.1, or 1.7.36 as applicable. No workaround is listed beyond pulling only trusted images.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
6.9 Medium 4.0 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 CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0036, the 29th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:12 UTC First seen by agentprime
  2. 31 Oct 2026, 14:12 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.