BlackTreeCVE Intelligence
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Full vulnerability report · 2026
CVE-2026-53493High confidence

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

containerd · containerd

Official source article: GitHub GHSA-PG57-6JWG-Q645 ↗. Check the applicable product and release in the original source.

6.9MediumCVSS 4.0
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityMediumOperational priority:Medium, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 0.36% for the current model date.

Compensating controls

  • Restrict the affected network interface to trusted sources where business-safe.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs containerd containerd and falls inside the recorded affected range.
  2. Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: As exposure requiresRemediation target: Within 365 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Distribution package intelligence

Release-specific package status

Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

6 package states
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Debian trixietrixie · sourcecontainerdAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 6 Oct 2026
Debian bookwormbookworm · sourcecontainerdAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 6 Oct 2026
Debian forkyforky · sourcecontainerdAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 6 Oct 2026
Debian sidsid · sourcecontainerdVendor fix publishedDebian records a fixed source-package version for this release.2.1.9+ds1-5Debian Security Tracker ↗Source updated 6 Oct 2026
Ubuntu 24.04 LTSnoble · esm-appscontainerdUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 6 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivecontainerd-appUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 6 Oct 2026
Open-source package ranges12 source-attributed ranges

These OSV and GitHub advisory ranges apply only to the named package and ecosystem. A listed fixed version is not a universal product patch or proof that an update is installed.

Ecosystem and packageAffected rangeFirst fixed versionEvidence
Gogithub.com/containerd/containerdSEMVER: introduced 0; fixed 1.7.361.7.36OSV record ↗aggregator derived · 1 Oct 2026
Gogithub.com/containerd/containerdSEMVER: introduced 0; fixed 1.7.361.7.36OSV record ↗aggregator derived · 1 Oct 2026
Gogithub.com/containerd/containerd/v2SEMVER: introduced 2.0.0; fixed 2.0.132.0.13OSV record ↗aggregator derived · 1 Oct 2026
Gogithub.com/containerd/containerd/v2SEMVER: introduced 2.1.0; fixed 2.2.92.2.9OSV record ↗aggregator derived · 1 Oct 2026
Gogithub.com/containerd/containerd/v2SEMVER: introduced 2.3.0; fixed 2.3.62.3.6OSV record ↗aggregator derived · 1 Oct 2026
Gogithub.com/containerd/containerd/v2SEMVER: introduced 2.4.0; fixed 2.4.12.4.1OSV record ↗aggregator derived · 1 Oct 2026
Gogithub.com/containerd/containerd/v2SEMVER: introduced 2.0.0; fixed 2.0.13; introduced 2.1.0; fixed 2.2.9; introduced 2.3.0; fixed 2.3.6; introduced 2.4.0; fixed 2.4.12.0.13, 2.2.9, 2.3.6, 2.4.1OSV record ↗aggregator derived · 1 Oct 2026
gogithub.com/containerd/containerd<= 1.7.351.7.36GitHub advisory ↗upstream repository advisory · 25 Sep 2026
gogithub.com/containerd/containerd/v2>= 2.0.0, < 2.0.132.0.13GitHub advisory ↗upstream repository advisory · 25 Sep 2026
gogithub.com/containerd/containerd/v2>= 2.1.0, < 2.2.92.2.9GitHub advisory ↗upstream repository advisory · 25 Sep 2026
gogithub.com/containerd/containerd/v2>= 2.3.0, < 2.3.62.3.6GitHub advisory ↗upstream repository advisory · 25 Sep 2026
gogithub.com/containerd/containerd/v2= 2.4.02.4.1GitHub advisory ↗upstream repository advisory · 25 Sep 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
CVE-2026-53493 · CSAF 2.0 · revision 2 · interimSUSE Product Security TeamCVE-2026-53493
109 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • containerd as component of SUSE Linux Enterprise Desktop 15 SP7
  • containerd as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • containerd-ctr as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • containerd-devel as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • containerd as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • containerd-ctr as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • containerd as component of SUSE Linux Enterprise High Performance Computing 15 SP2
  • containerd-ctr as component of SUSE Linux Enterprise High Performance Computing 15 SP2
  • containerd as component of SUSE Linux Enterprise High Performance Computing 15 SP3
  • containerd-ctr as component of SUSE Linux Enterprise High Performance Computing 15 SP3
  • containerd as component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
  • containerd-ctr as component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
Summary
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.
Remediation
No remediation text is recorded.
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-86486

No EUVD known-exploited evidence

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.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
6.9 · CVSS 4.0
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
01

What, why and how

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.

What

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.

Why

The product does not properly control the allocation and maintenance of a limited resource.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

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.

Why

The product does not properly control the allocation and maintenance of a limited resource.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Uncontrolled Resource Consumption → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Not a CVSS 4.0 base metric
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-400 ↗

CWE-400: Uncontrolled Resource Consumption. The product does not properly control the allocation and maintenance of a limited resource.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
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

Common Vulnerability Scoring System 4.0: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.ATNoneAttack requirements: No additional deployment or execution condition is required.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.VCNoneVulnerable-system confidentiality: No direct loss is represented by this metric.VINoneVulnerable-system integrity: No direct loss is represented by this metric.VALowVulnerable-system availability: A successful attack can cause a limited loss.SCNoneSubsequent-system confidentiality: No direct loss is represented by this metric.SINoneSubsequent-system integrity: No direct loss is represented by this metric.SANoneSubsequent-system availability: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-400
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-86486Official EUVD mapping

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.

Official EUVD record ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix not verified
Affected
  • containerd as component of SUSE Linux Enterprise Desktop 15 SP7
  • containerd as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • containerd-ctr as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • containerd-devel as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • containerd as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • containerd-ctr as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • containerd as component of SUSE Linux Enterprise High Performance Computing 15 SP2
  • containerd-ctr as component of SUSE Linux Enterprise High Performance Computing 15 SP2
  • containerd as component of SUSE Linux Enterprise High Performance Computing 15 SP3
  • containerd-ctr as component of SUSE Linux Enterprise High Performance Computing 15 SP3
  • containerd as component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
  • containerd-ctr as component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
  • containerd-devel as component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
  • containerd as component of SUSE Linux Enterprise High Performance Computing 15 SP4
  • containerd-ctr as component of SUSE Linux Enterprise High Performance Computing 15 SP4
  • containerd-devel as component of SUSE Linux Enterprise High Performance Computing 15 SP4
  • containerd as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS
  • containerd-ctr as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS
  • containerd-devel as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS
  • containerd as component of SUSE Linux Enterprise High Performance Computing 15 SP5
  • containerd-ctr as component of SUSE Linux Enterprise High Performance Computing 15 SP5
  • containerd-devel as component of SUSE Linux Enterprise High Performance Computing 15 SP5
  • containerd as component of SUSE Linux Enterprise Micro 5.3
  • containerd as component of SUSE Linux Enterprise Micro 5.4
  • containerd as component of SUSE Linux Enterprise Micro 5.5
  • containerd as component of SUSE Linux Enterprise Module for Basesystem 15 SP7
  • containerd as component of SUSE Linux Enterprise Module for Containers 15 SP7
  • containerd-ctr as component of SUSE Linux Enterprise Module for Containers 15 SP7
  • containerd-devel as component of SUSE Linux Enterprise Module for Containers 15 SP7
  • containerd as component of SUSE Linux Enterprise Server 12 SP5-LTSS
  • and 79 more
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 25 Sept 2026 · Last source change 28 Sept 2026, 14:58 UTC · CWE-400 · Uncontrolled Resource Consumption

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-09-25
European sourceENISA EUVD · EUVD-2026-86486
Product sourceVendor CSAF · SUSE Product Security Team
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD awaiting enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. ENISA EUVD mappingEUVD-2026-86486 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2026-86486"}
    ENISA EUVD ↗
  2. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2026-86486↗Vendor CSAF · SUSE Product Security Team↗CVE authority or vendor reference · GitHub GHSA-PG57-6JWG-Q645↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-53493 · cve.blacktree.nl