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TI-2026-26368 Aliases CVE-2026-34043GHSA-qj8w-gfj5-8c6v

Serialize JavaScript has CPU Exhaustion Denial of Service via crafted array-like objects

Priority LOW 33CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 18 fixed, 19 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-400.

Summary

Serialize JavaScript to a superset of JSON that includes regular expressions and functions. Prior to version 7.0.5, there is a Denial of Service (DoS) vulnerability caused by CPU exhaustion. When serializing a specially crafted "array-like" object (an object that inherits from Array.prototype but has a very large length property), the process enters an intensive loop that consumes 100% CPU and hangs indefinitely. This issue has been patched in version 7.0.5.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00491 42nd percentileScored 2026-11-07
Fix Partial serialize-javascript (yahoo): 7.0.5serialize-javascript (npm): 7.0.5Red Hat: 13 advisoriesRed Hat: 18 fixed, 19 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
yahooserialize-javascriptbefore 7.0.57.0.5Patch availableCNA
—serialize-javascript (npm)5.0.0 to before 7.0.57.0.5Patch availableGHSA-qj8w-gfj5-8c6v
  • serialize-javascript Vendoryahoo Affected before 7.0.5 Fixed in 7.0.5 Patch available CNA
  • serialize-javascript (npm) Vendor— Affected 5.0.0 to before 7.0.5 Fixed in 7.0.5 Patch available GHSA-qj8w-gfj5-8c6v

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:yahoo:serialize:*:*:*:*:*:*:*:*before 7.0.5Vulnerableyahoo
  • cpe:2.3:a:yahoo:serialize:*:*:*:*:*:*:*:* Versions before 7.0.5 Vulnerable ·yahoo

Remediation

  • Fix · CNA serialize-javascript (yahoo) Fixed in 7.0.5
  • Fix · GHSA-qj8w-gfj5-8c6v serialize-javascript (npm) Fixed in 7.0.5 Advisory →

Red Hat 13 advisories

  • RHSA-2026:56431 Released 2026-08-18 · Red Hat rating Important
    Red Hat OpenShift Data Foundation 4.18.27 security, enhancement & bug fix update
    • Red Hat Openshift Data Foundation 4.18 registry.redhat.io/odf4/cephcsi-rhel9, registry.redhat.io/odf4/cephcsi-rhel9-operator, registry.redhat.io/odf4/mcg-core-rhel9 +16
  • RHSA-2026:34099 Released 2026-07-09 · Red Hat rating Important
    OpenShift Container Platform 4.17.55 bug fix and security update
    • Red Hat OpenShift Container Platform 4.17 registry.redhat.io/openshift4/aws-kms-encryption-provider-rhel9, registry.redhat.io/openshift4/azure-kms-encryption-provider-rhel9, registry.redhat.io/openshift4/cloud-network-config-controller-rhel9 +47
  • RHSA-2026:29082 Released 2026-07-01 · Red Hat rating Important
    OpenShift Container Platform 4.16.65 bug fix and security update
    • Red Hat OpenShift Container Platform 4.16 registry.redhat.io/openshift4/ose-azure-cloud-controller-manager-rhel9, registry.redhat.io/openshift4/ose-azure-cloud-node-manager-rhel9, registry.redhat.io/openshift4/ose-cluster-capi-rhel9-operator +8
Show 10 more Red Hat advisories
  • RHSA-2026:24335 Released 2026-06-08 · Red Hat rating Important
    .NET 8.0 security update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) dotnet-sdk-8.0-source-built-artifacts-8.0.127-1.el9_6
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) aspnetcore-runtime-8.0-8.0.27-1.el9_6, aspnetcore-runtime-dbg-8.0-8.0.27-1.el9_6, aspnetcore-targeting-pack-8.0-8.0.27-1.el9_6 +9
  • RHSA-2026:24334 Released 2026-06-08 · Red Hat rating Important
    .NET 8.0 security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) aspnetcore-runtime-8.0-8.0.27-1.el9_4, aspnetcore-runtime-dbg-8.0-8.0.27-1.el9_4, aspnetcore-targeting-pack-8.0-8.0.27-1.el9_4 +11
  • RHSA-2026:24332 Released 2026-06-08 · Red Hat rating Important
    .NET 8.0 security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) aspnetcore-runtime-8.0-8.0.27-1.el10_0, aspnetcore-runtime-dbg-8.0-8.0.27-1.el10_0, aspnetcore-targeting-pack-8.0-8.0.27-1.el10_0 +9
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) dotnet-sdk-8.0-source-built-artifacts-8.0.127-1.el10_0
  • RHSA-2026:20041 Released 2026-05-27 · Red Hat rating Important
    OpenShift Container Platform 4.19.32 bug fix and security update
    • Red Hat OpenShift Container Platform 4.19 registry.redhat.io/openshift4/aws-karpenter-provider-aws-rhel9, registry.redhat.io/openshift4/aws-kms-encryption-provider-rhel9, registry.redhat.io/openshift4/azure-kms-encryption-provider-rhel9 +47
  • RHSA-2026:21293 Released 2026-05-27 · Red Hat rating Important
    .NET 8.0 security update
    • Red Hat Enterprise Linux AppStream (v. 9) aspnetcore-runtime-8.0-8.0.27-1.el9_8, aspnetcore-runtime-dbg-8.0-8.0.27-1.el9_8, aspnetcore-targeting-pack-8.0-8.0.27-1.el9_8 +9
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) dotnet-sdk-8.0-source-built-artifacts-8.0.127-1.el9_8
  • RHSA-2026:21291 Released 2026-05-27 · Red Hat rating Important
    .NET 8.0 security update
    • Red Hat Enterprise Linux AppStream (v. 8) aspnetcore-runtime-8.0-8.0.27-1.el8_10, aspnetcore-runtime-dbg-8.0-8.0.27-1.el8_10, aspnetcore-targeting-pack-8.0-8.0.27-1.el8_10 +9
    • Red Hat Enterprise Linux CRB (v. 8) dotnet-sdk-8.0-source-built-artifacts-8.0.127-1.el8_10
  • RHSA-2026:21286 Released 2026-05-27 · Red Hat rating Important
    .NET 8.0 security update
    • Red Hat Enterprise Linux AppStream (v. 10) aspnetcore-runtime-8.0-8.0.27-1.el10_2, aspnetcore-runtime-dbg-8.0-8.0.27-1.el10_2, aspnetcore-targeting-pack-8.0-8.0.27-1.el10_2 +9
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) dotnet-sdk-8.0-source-built-artifacts-8.0.127-1.el10_2
  • RHSA-2026:17448 Released 2026-05-20 · Red Hat rating Important
    OpenShift Container Platform 4.18.42 bug fix and security update
    • Red Hat OpenShift Container Platform 4.18 registry.redhat.io/openshift4/ose-csi-driver-nfs-rhel9, registry.redhat.io/openshift4/ose-networking-console-plugin-rhel9, registry.redhat.io/openshift4/ose-openstack-cinder-csi-driver-rhel9-operator +1
  • RHSA-2026:17468 Released 2026-05-20 · Red Hat rating Important
    OpenShift Container Platform 4.20.23 bug fix and security update
    • Red Hat OpenShift Container Platform 4.20 registry.redhat.io/openshift4/azure-service-rhel9-operator, registry.redhat.io/openshift4/kube-metrics-server-rhel9, registry.redhat.io/openshift4/ose-agent-installer-ui-rhel9 +14
  • RHSA-2026:17474 Released 2026-05-19 · Red Hat rating Important
    OpenShift Container Platform 4.21.16 bug fix and security update
    • Red Hat OpenShift Container Platform 4.21 registry.redhat.io/openshift4/aws-kms-encryption-provider-rhel9, registry.redhat.io/openshift4/azure-service-rhel9-operator, registry.redhat.io/openshift4/kube-metrics-server-rhel9 +13

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Cryostat 4AffectedNo fix yet
Logging Subsystem for Red Hat OpenShiftAffectedNo fix yet: Fix deferred
Network Observability OperatorAffectedNo fix yet: Fix deferred
Node HealthCheck OperatorAffectedNo fix yet: Fix deferred
Red Hat 3scale API Management Platform 2AffectedNo fix planned: Will not fix
Red Hat Ansible Automation Platform 2AffectedNo fix yet
Red Hat Build of KeycloakAffectedNo fix planned: Will not fix
Red Hat Build of Podman DesktopAffectedNo fix yet
Red Hat Enterprise Linux 8AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 9AffectedNo fix planned: Will not fix
Red Hat Fuse 7AffectedNo fix yet: Fix deferred
Red Hat OpenShift GitOpsAffectedNo fix planned: Will not fix
Red Hat OpenShift Virtualization 4AffectedNo fix yet: Fix deferred
Red Hat Process Automation 7AffectedNo fix yet: Fix deferred
Red Hat Quay 3AffectedNo fix yet: Fix deferred
Red Hat Single Sign-On 7AffectedNo fix yet: Fix deferred
Red Hat build of Apache Camel - HawtIO 4AffectedNo fix yet
Red Hat build of Apicurio Registry 2AffectedNo fix yet: Fix deferred
streams for Apache Kafka 2AffectedNo fix yet: Fix deferred
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2026:24335
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:21286
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:21291
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:21293
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:24334
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:24332
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:24335
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:21291
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:21286
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:21293
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:24332
Red Hat OpenShift Container Platform 4.16Fixed RHSA-2026:29082
Red Hat OpenShift Container Platform 4.17Fixed RHSA-2026:34099
Red Hat OpenShift Container Platform 4.18Fixed RHSA-2026:17448
Red Hat OpenShift Container Platform 4.19Fixed RHSA-2026:20041
Red Hat OpenShift Container Platform 4.20Fixed RHSA-2026:17468
Red Hat OpenShift Container Platform 4.21Fixed RHSA-2026:17474
Red Hat Openshift Data Foundation 4.18Fixed RHSA-2026:56431
Not affected: 20 products
  • Cryostat 4
  • Gatekeeper 3
  • Red Hat 3scale API Management Platform 2
  • Red Hat AMQ Broker 7
  • Red Hat Ansible Automation Platform 2
  • Red Hat Data Grid 8
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat JBoss Enterprise Application Platform 8
  • Red Hat JBoss Enterprise Application Platform Expansion Pack
  • Red Hat OpenShift Container Platform 4
  • Red Hat OpenShift Container Platform 4.16
  • Red Hat OpenShift Container Platform 4.17
  • Red Hat OpenShift Container Platform 4.18
  • Red Hat OpenShift Container Platform 4.19
  • Red Hat OpenShift Container Platform 4.20
  • Red Hat OpenShift Container Platform 4.21
  • Red Hat Openshift Data Foundation 4.18
  • Red Hat Satellite 6
  • streams for Apache Kafka 3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-34043
  2. 2026-10-03 Alias added: GHSA-qj8w-gfj5-8c6v

References

Patch 1

Advisory 2

Other 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences