{"id":"CVE-2026-53493","state":"PUBLISHED","title":"Containerd has image-pull DoS via crafted OCI index graph amplification","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.","publishedAt":"2026-09-25T00:06:43.298Z","updatedAt":"2026-09-28T14:58:33.011Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"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":"GitHub_M"},"assigner":"GitHub_M","products":["containerd containerd"],"affected":[{"vendor":"containerd","product":"containerd","versions":[{"version":">= 2.0.0, < 2.0.13","status":"affected"},{"version":"< 1.7.36","status":"affected"},{"version":">= 2.1.0, < 2.2.9","status":"affected"},{"version":">= 2.3.0, < 2.3.6","status":"affected"},{"version":"= 2.4.0","status":"affected"}]}],"references":["https://github.com/containerd/containerd/security/advisories/GHSA-pg57-6jwg-q645"],"weaknesses":["CWE-400","CWE-770","CWE-834"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53493.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53493","state":"PUBLISHED","datePublished":"2026-09-25T00:06:43.298Z","dateUpdated":"2026-09-28T14:58:33.011Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-09T17:05:25.059Z"},"containers":{"cna":{"title":"Containerd has image-pull DoS via crafted OCI index graph amplification","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"containerd","product":"containerd","versions":[{"version":">= 2.0.0, < 2.0.13","status":"affected"},{"version":"< 1.7.36","status":"affected"},{"version":">= 2.1.0, < 2.2.9","status":"affected"},{"version":">= 2.3.0, < 2.3.6","status":"affected"},{"version":"= 2.4.0","status":"affected"}]}],"references":[{"url":"https://github.com/containerd/containerd/security/advisories/GHSA-pg57-6jwg-q645","name":"https://github.com/containerd/containerd/security/advisories/GHSA-pg57-6jwg-q645","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"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","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"CWE-770: Allocation of Resources Without Limits or Throttling","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-834","lang":"en","description":"CWE-834: Excessive Iteration","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-25T00:06:43.298Z"},"source":{"advisory":"GHSA-pg57-6jwg-q645","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-28T14:58:24.201213Z","id":"CVE-2026-53493","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-28T14:58:33.011Z"}}]}}}