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High 7.5Published Apr 7, 2026

CVE-2026-32280Unexpected work during chain building in crypto/x509

Updated under an hour ago ()

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It affects Go standard library crypto/x509 and 59 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service. This affects both direct users of crypto/x509 and users of crypto/tls.

CVSS
7.5 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE)
CWE-770
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
Go
NVD analysis
Modified
Record last updated
Sep 18, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
Go standard library crypto/x509
go_standard_library:crypto_x509 (from the name)
before 1.25.9; from 1.26.0-0 before 1.26.2
CNA record
from 4.1.1-7 not affected
CISA ADP
Red Hat HawtIO HawtIO 4.4.0
redhat:apache_camel_hawtio
from operator-container not affected
CISA ADP
from 0:2.5.10-6.el8ap not affected
CISA ADP
from 0:1.25.9-3.el10_1 not affected
CISA ADP
from 0:1.25.9-1.el10_0 not affected
CISA ADP
from 0:1.4.0-7.el7_9 not affected
CISA ADP
from 8060020260515174849.ad008a3a not affected; from 8060020260803064027.ad008a3a not affected
CISA ADP
from 8060020260803064027.ad008a3a not affected
CISA ADP
from 8060020260515174849.ad008a3a not affected
CISA ADP
from 8060020260515174849.ad008a3a not affected
CISA ADP
from 0:0.144.0-2.el9_4 not affected
CISA ADP
from 1:1.4.0-7.rhaos4.12.el8 not affected
CISA ADP
from 0:0.2.1-1.1.el8ost not affected
CISA ADP
from 0:0.0.3-5.el8sat not affected
CISA ADP
Red Hat RHEM 1.0 for RHEL 9
redhat:edge_manager
from 0:1.0.3-1.el9em not affected
CISA ADP
Red Hat Compliance Operator 1
redhat:openshift_compliance_operator
from 1781605005 not affected
CISA ADP
Red Hat Custom Metric Autoscaler 2.19
redhat:openshift_custom_metrics_autoscaler
from 1780101239 not affected
CISA ADP
from 1781192891 not affected
CISA ADP
from 1782177012 not affected
CISA ADP
from 1780106633 not affected
CISA ADP
Red Hat Multicluster Global Hub 1.4.5
redhat:multicluster_globalhub
from 1779838819 not affected
CISA ADP
from 1778508501 not affected
CISA ADP
Red Hat OpenShift API for Data Protection 1.3
redhat:openshift_api_data_protection
from 1785180878 not affected
CISA ADP
from 1780238563 not affected
CISA ADP
Red Hat Red Hat Advanced Cluster Security 4.9
redhat:advanced_cluster_security
from 1777986630 not affected; from 1783357116 not affected
CISA ADP
Red Hat Red Hat Container Native Virtualization 4.16
redhat:container_native_virtualization
from 1787227059 not affected
CISA ADP
from 1779841292 not affected
CISA ADP
from 1.0.3-1779996197 not affected
CISA ADP
from 1783914276 not affected
CISA ADP
from 1780513840 not affected
CISA ADP
from 1780374228 not affected
CISA ADP
from 1779829736 not affected
CISA ADP
Red Hat Red Hat OpenShift distributed tracing 3.9.3
redhat:openshift_distributed_tracing
from 1778056267 not affected
CISA ADP
from 1777374598 not affected
CISA ADP
all versions status unknown
CISA ADP
all versions status unknown
CISA ADP
Red Hat Red Hat Trusted Artifact Signer 1.3
redhat:trusted_artifact_signer
all versions status unknown
CISA ADP
all versions status unknown
CISA ADP
all versions status unknown
CISA ADP
all versions status unknown
CISA ADP
Red Hat Confidential Compute Attestation
redhat:confidential_compute_attestation
all versions status unknown
CISA ADP
Red Hat Deployment Validation Operator
redhat:deployment_validator_operator
all versions status unknown
CISA ADP
Red Hat ExternalDNS Operator
redhat:ext_dns_optr
all versions status unknown
CISA ADP
all versions status unknown
CISA ADP
Red Hat Fence Agents Remediation Operator
redhat:workload_availability_far
all versions status unknown
CISA ADP
Red Hat File Integrity Operator
redhat:openshift_file_integrity_operator
all versions status unknown
CISA ADP
Red Hat Gatekeeper 3
redhat:gatekeeper
all versions status unknown
CISA ADP
all versions status unknown
CISA ADP
Red Hat Machine Deletion Remediation Operator
redhat:workload_availability_mdr
all versions status unknown
CISA ADP
Red Hat Migration Toolkit for Applications 8
redhat:migration_toolkit_applications
all versions status unknown
CISA ADP
Red Hat Node HealthCheck Operator
redhat:workload_availability_nhc
all versions status unknown
CISA ADP
all versions status unknown
CISA ADP
Red Hat OpenShift Lightspeed
redhat:openshift_lightspeed
all versions status unknown
CISA ADP
Red Hat OpenShift Pipelines
redhat:openshift_pipelines
all versions status unknown
CISA ADP
all versions status unknown
CISA ADP
Red Hat Power monitoring for Red Hat OpenShift
redhat:openshift_power_monitoring
all versions status unknown
CISA ADP
all versions status unknown
CISA ADP
Red Hat Red Hat AI Inference Server
redhat:ai_inference_server
all versions status unknown
CISA ADP
all versions status unknown
CISA ADP

References

  • patch
  • issue-tracking
  • mailing-list, release-notes
  • vendor-advisory

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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