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TI-2026-42693 Aliases CVE-2026-59879GHSA-v56q-mh7h-f735

Immutable.js `List` 32-bit trie overflow → unrecoverable DoS

Priority HIGH 77CWE-1284Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 23 fixed, 17 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-190 and the CVSS impact.

Summary

Immutable.js provides many Persistent Immutable data structures. Prior to 4.3.9 and 5.1.8, List#set, List#setSize, List#setIn, List#updateIn, and the functional set, setIn, and updateIn mishandle an index or size in the range 2 ** 30 to 2 ** 31 in setListBounds in src/List.js, causing an empty List to enter an uncatchable infinite loop, a populated List to allocate without bound until process abort, or setSize to silently wrap large values. This issue is fixed in versions 4.3.9 and 5.1.8.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00575 47th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial immutable-js (immutable-js): 5.1.8, 4.3.9immutable (npm): 4.3.9, 5.1.8, 3.8.4Red Hat: 24 advisoriesRed Hat: 23 fixed, 17 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
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
immutable-jsimmutable-js5.0.0-beta.1 to before 5.1.8; before 4.3.95.1.8, 4.3.9Patch availableCNA
—immutable (npm)4.0.0-rc.1 to before 4.3.94.3.9Patch availableGHSA-v56q-mh7h-f735
—immutable (npm)5.0.0-beta.1 to before 5.1.85.1.8Patch availableGHSA-v56q-mh7h-f735
—immutable (npm)before 3.8.43.8.4Patch availableGHSA-v56q-mh7h-f735
  • immutable-js Vendorimmutable-js Affected 5.0.0-beta.1 to before 5.1.8; before 4.3.9 Fixed in 5.1.8, 4.3.9 Patch available CNA
  • immutable (npm) Vendor— Affected 4.0.0-rc.1 to before 4.3.9 Fixed in 4.3.9 Patch available GHSA-v56q-mh7h-f735
  • immutable (npm) Vendor— Affected 5.0.0-beta.1 to before 5.1.8 Fixed in 5.1.8 Patch available GHSA-v56q-mh7h-f735
  • immutable (npm) Vendor— Affected before 3.8.4 Fixed in 3.8.4 Patch available GHSA-v56q-mh7h-f735

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:immutable-js:immutable:*:*:*:*:*:node.js:*:*before 4.3.9; 5.0.0 to before 5.1.8Vulnerableimmutable-js
  • cpe:2.3:a:immutable-js:immutable:*:*:*:*:*:node.js:*:* Versions before 4.3.9; 5.0.0 to before 5.1.8 Vulnerable ·immutable-js

Remediation

  • Fix · CNA immutable-js (immutable-js) Fixed in 5.1.8, 4.3.9
  • Fix · GHSA-v56q-mh7h-f735 immutable (npm) Fixed in 4.3.9 Advisory →
  • Fix · GHSA-v56q-mh7h-f735 immutable (npm) Fixed in 5.1.8 Advisory →
  • Fix · GHSA-v56q-mh7h-f735 immutable (npm) Fixed in 3.8.4 Advisory →

Red Hat 24 advisories

  • RHSA-2026:95360 Released 2026-11-04 · Red Hat rating Important
    Red Hat build of Cryostat security update
    • Cryostat 4 on RHEL 9 cryostat/cryostat-grafana-dashboard-rhel9, cryostat/cryostat-openshift-console-plugin-rhel9, cryostat/cryostat-storage-rhel9
  • RHSA-2026:93951 Released 2026-11-02 · Red Hat rating Important
    OpenShift Virtualization v4.17 Images
    • Red Hat Container Native Virtualization 4.17 registry.redhat.io/container-native-virtualization/kubevirt-console-plugin-rhel9
  • RHSA-2026:92650 Released 2026-10-29 · Red Hat rating Important
    Red Hat OpenShift Data Foundation 4.19.26 security, enhancement & bug fix update
    • Red Hat Openshift Data Foundation 4.19 registry.redhat.io/odf4/cephcsi-rhel9, registry.redhat.io/odf4/cephcsi-rhel9-operator, registry.redhat.io/odf4/mcg-core-rhel9 +17
Show 21 more Red Hat advisories
  • RHSA-2026:87410 Released 2026-10-21 · Red Hat rating Critical
    RHOAI 2.25.12 - Red Hat OpenShift AI
    • Red Hat OpenShift AI 2.25 registry.redhat.io/rhoai/odh-built-in-detector-rhel9, registry.redhat.io/rhoai/odh-caikit-nlp-rhel9, registry.redhat.io/rhoai/odh-codeflare-operator-rhel9 +47
  • RHSA-2026:85846 Released 2026-10-20 · Red Hat rating Important
    Migration Toolkit for Containers (MTC) 1.8.18 security and bug fix update
    • Red Hat Migration Toolkit 1.8 registry.redhat.io/rhmtc/openshift-migration-controller-rhel8, registry.redhat.io/rhmtc/openshift-migration-registry-rhel8, registry.redhat.io/rhmtc/openshift-migration-ui-rhel8 +1
  • RHSA-2026:83503 Released 2026-10-20 · Red Hat rating Important
    OpenShift Container Platform 4.20.43 security and extras update
    • Red Hat OpenShift Container Platform 4.20 registry.redhat.io/openshift4/nmstate-console-plugin-rhel9, registry.redhat.io/openshift4/ose-cluster-capacity-rhel9, registry.redhat.io/openshift4/ose-local-storage-diskmaker-rhel9 +5
  • RHSA-2026:79546 Released 2026-10-08 · Red Hat rating Important
    Red Hat Quay 3.12.23
    • Red Hat Quay 3.12 registry.redhat.io/quay/quay-rhel8
  • RHSA-2026:79366 Released 2026-10-08 · Red Hat rating Important
    Red Hat Quay 3.10.27
    • Red Hat Quay 3.10 registry.redhat.io/quay/quay-rhel8
  • RHSA-2026:77656 Released 2026-10-07 · Red Hat rating Important
    Red Hat Quay 3.9.27
    • Red Hat Quay 3.9 registry.redhat.io/quay/quay-rhel8
  • RHSA-2026:74435 Released 2026-10-07 · Red Hat rating Important
    OpenShift Container Platform 4.19.50 security and extras update
    • Red Hat OpenShift Container Platform 4.19 registry.redhat.io/openshift4/kube-compare-artifacts-rhel9, registry.redhat.io/openshift4/nmstate-console-plugin-rhel9, registry.redhat.io/openshift4/ose-cluster-nfd-rhel9-operator
  • RHSA-2026:74384 Released 2026-10-06 · Red Hat rating Important
    OpenShift Container Platform 4.21.36 security and extras update
    • Red Hat OpenShift Container Platform 4.21 registry.redhat.io/openshift4/kube-compare-artifacts-rhel9, registry.redhat.io/openshift4/nmstate-console-plugin-rhel9, registry.redhat.io/openshift4/ose-aws-efs-csi-driver-container-rhel9
  • RHSA-2026:74503 Released 2026-10-01 · Red Hat rating Critical
    Satellite 6.19.5 Async Update
    • Red Hat Satellite 6.19 for RHEL 9 foreman-3.18.0.14-1.el9sat, foreman-cli-3.18.0.14-1.el9sat, foreman-debug-3.18.0.14-1.el9sat +19
  • RHSA-2026:72854 Released 2026-09-28 · Red Hat rating Important
    multicluster engine for Kubernetes v2.8.11 security update
    • multicluster engine for Kubernetes 2.8 registry.redhat.io/multicluster-engine/addon-manager-rhel9, registry.redhat.io/multicluster-engine/backplane-rhel9-operator, registry.redhat.io/multicluster-engine/cluster-api-provider-kubevirt-rhel9 +8
  • RHSA-2026:72851 Released 2026-09-28 · Red Hat rating Important
    multicluster engine for Kubernetes v2.9.8 security update
    • multicluster engine for Kubernetes 2.9 registry.redhat.io/multicluster-engine/addon-manager-rhel9, registry.redhat.io/multicluster-engine/cluster-api-provider-kubevirt-rhel9, registry.redhat.io/multicluster-engine/console-mce-rhel9 +7
  • RHSA-2026:72850 Released 2026-09-28 · Red Hat rating Important
    multicluster engine for Kubernetes v2.6.15 security update
    • multicluster engine for Kubernetes 2.6 registry.redhat.io/multicluster-engine/addon-manager-rhel9, registry.redhat.io/multicluster-engine/backplane-rhel9-operator, registry.redhat.io/multicluster-engine/cluster-api-provider-kubevirt-rhel9 +7
  • RHSA-2026:72712 Released 2026-09-28 · Red Hat rating Important
    Ansible plug-ins for Red Hat Developer Hub Product Release Update
    • Red Hat Ansible Automation Platform 2.1 registry.redhat.io/ansible-automation-platform/automation-portal
  • RHSA-2026:69289 Released 2026-09-21 · Red Hat rating Important
    A Subscription Management tool for finding and reporting Red Hat product usage
    • Red Hat Discovery 2 registry.redhat.io/discovery/discovery-server-rhel9, registry.redhat.io/discovery/discovery-ui-rhel9
  • RHSA-2026:69255 Released 2026-09-21 · Red Hat rating Important
    Red Hat Quay 3.16.6
    • Red Hat Quay 3.16 registry.redhat.io/quay/quay-rhel9
  • RHSA-2026:68765 Released 2026-09-17 · Red Hat rating Important
    Technical preview of the satellite/iop-vulnerability-frontend-rhel9 container image
    • Red Hat Satellite 6.18 registry.redhat.io/satellite/iop-vulnerability-frontend-rhel9
  • RHSA-2026:68756 Released 2026-09-17 · Red Hat rating Important
    General availability of the satellite/iop-host-inventory-frontend-rhel9 container image
    • Red Hat Satellite 6.18 registry.redhat.io/satellite/iop-host-inventory-frontend-rhel9
  • RHSA-2026:68691 Released 2026-09-17 · Red Hat rating Important
    Kiali 2.17.14 for Red Hat OpenShift Service Mesh 3.2
    • Red Hat OpenShift Service Mesh 3.2 registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9, registry.redhat.io/openshift-service-mesh/kiali-rhel9
  • RHSA-2026:68689 Released 2026-09-17 · Red Hat rating Important
    Kiali 2.11.17 for Red Hat OpenShift Service Mesh 3.1
    • Red Hat OpenShift Service Mesh 3.1 registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9, registry.redhat.io/openshift-service-mesh/kiali-rhel9
  • RHSA-2026:68687 Released 2026-09-17 · Red Hat rating Important
    Kiali 2.4.23 for Red Hat OpenShift Service Mesh 3.0
    • Red Hat OpenShift Service Mesh 3.0 registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9, registry.redhat.io/openshift-service-mesh/kiali-rhel9
  • RHSA-2026:67539 Released 2026-09-15 · Red Hat rating Important
    Red Hat Advanced Cluster Management for Kubernetes v2.14.5 security update
    • Red Hat Advanced Cluster Management for Kubernetes 2.14 registry.redhat.io/rhacm2/acm-grafana-rhel9, registry.redhat.io/rhacm2/acm-multicluster-observability-addon-rhel9, registry.redhat.io/rhacm2/acm-prometheus-config-reloader-rhel9 +7

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Logging Subsystem for Red Hat OpenShiftAffectedNo fix yet
Migration Toolkit for VirtualizationAffectedNo fix yet
Network Observability OperatorAffectedNo fix yet
Node HealthCheck OperatorAffectedNo fix yet
OpenShift LightspeedAffectedNo fix yet
OpenShift PipelinesAffectedNo fix yet
OpenShift Service Mesh 2AffectedNo fix yet
Red Hat 3scale API Management Platform 2AffectedNo fix planned: Will not fix
Red Hat Advanced Cluster Security 4AffectedNo fix planned: Will not fix
Red Hat Ansible Automation Platform 2AffectedNo fix yet
Red Hat Connectivity Link 1AffectedNo fix yet: Fix deferred
Red Hat Edge Manager 1AffectedNo fix yet
Red Hat Enterprise Linux 10AffectedNo fix planned: Will not fix
Red Hat OpenShift Container Platform 4AffectedNo fix yet
Red Hat OpenShift Container Platform 5AffectedNo fix yet
Red Hat OpenShift GitOpsAffectedNo fix planned: Will not fix
Red Hat Satellite 6AffectedNo fix yet
Cryostat 4 on RHEL 9Fixed RHSA-2026:95360
Red Hat Advanced Cluster Management for Kubernetes 2.14Fixed RHSA-2026:67539
Red Hat Ansible Automation Platform 2.1Fixed RHSA-2026:72712
Red Hat Container Native Virtualization 4.17Fixed RHSA-2026:93951
Red Hat Discovery 2Fixed RHSA-2026:69289
Red Hat Migration Toolkit 1.8Fixed RHSA-2026:85846
Red Hat OpenShift AI 2.25Fixed RHSA-2026:87410
Red Hat OpenShift Container Platform 4.19Fixed RHSA-2026:74435
Red Hat OpenShift Container Platform 4.20Fixed RHSA-2026:83503
Red Hat OpenShift Container Platform 4.21Fixed RHSA-2026:74384
Red Hat OpenShift Service Mesh 3.0Fixed RHSA-2026:68687
Red Hat OpenShift Service Mesh 3.1Fixed RHSA-2026:68689
Red Hat OpenShift Service Mesh 3.2Fixed RHSA-2026:68691
Red Hat Openshift Data Foundation 4.19Fixed RHSA-2026:92650
Red Hat Quay 3.10Fixed RHSA-2026:79366
Red Hat Quay 3.12Fixed RHSA-2026:79546
Red Hat Quay 3.16Fixed RHSA-2026:69255
Red Hat Quay 3.9Fixed RHSA-2026:77656
Red Hat Satellite 6.18Fixed RHSA-2026:68756, RHSA-2026:68765
Red Hat Satellite 6.19 for RHEL 9Fixed RHSA-2026:74503
multicluster engine for Kubernetes 2.6Fixed RHSA-2026:72850
multicluster engine for Kubernetes 2.8Fixed RHSA-2026:72854
multicluster engine for Kubernetes 2.9Fixed RHSA-2026:72851
Not affected: 26 products
  • Cryostat 4
  • Cryostat 4 on RHEL 9
  • OpenShift Service Mesh 3
  • Red Hat 3scale API Management Platform 2
  • Red Hat Advanced Cluster Management for Kubernetes 2.14
  • Red Hat Developer Hub 1
  • Red Hat Discovery 2
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat Migration Toolkit 1.8
  • Red Hat OpenShift AI (RHOAI)
  • Red Hat OpenShift AI 2.25
  • Red Hat OpenShift Container Platform 4
  • 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 4.19
  • Red Hat Quay 3.10
  • Red Hat Quay 3.12
  • Red Hat Quay 3.16
  • Red Hat Quay 3.9
  • Red Hat Satellite 6.19 for RHEL 9
  • multicluster engine for Kubernetes 2.6
  • multicluster engine for Kubernetes 2.8
  • multicluster engine for Kubernetes 2.9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-59879
  2. 2026-10-03 Alias added: GHSA-v56q-mh7h-f735
  3. 2026-10-06 Fix available: RHSA-2026:74384 · Red Hat
  4. 2026-10-06 Fix available: Red Hat OpenShift Container Platform 4.21 · Red Hat
  5. 2026-10-07 Fix available: RHSA-2026:74435 · Red Hat
  6. 2026-10-07 Fix available: Red Hat OpenShift Container Platform 4.19 · Red Hat
  7. 2026-10-07 Fix available: RHSA-2026:77656 · Red Hat
  8. 2026-10-08 Fix available: Red Hat Quay 3.9 · Red Hat
  9. 2026-10-09 Fix available: RHSA-2026:79546 · Red Hat
  10. 2026-10-09 Fix available: RHSA-2026:79366 · Red Hat
  11. 2026-10-09 Fix available: Red Hat Quay 3.10, Red Hat Quay 3.12 · Red Hat
  12. 2026-10-13 Affected versions changed · Red Hat
  13. 2026-10-20 Fix available: RHSA-2026:85846 · Red Hat
  14. 2026-10-20 Fix available: RHSA-2026:83503 · Red Hat
  15. 2026-10-21 Fix available: Red Hat Migration Toolkit 1.8, Red Hat OpenShift Container Platform 4.20 · Red Hat
  16. 2026-10-22 Fix available: RHSA-2026:87410 · Red Hat
  17. 2026-10-23 EPSS moved to the below the 50th percentile
  18. 2026-10-23 Fix available: Red Hat OpenShift AI 2.25 · Red Hat
  19. 2026-10-27 Affected versions changed · Red Hat
  20. 2026-10-30 Affected versions changed · Red Hat
  21. 2026-10-31 Fix available: RHSA-2026:92650 · Red Hat
  22. 2026-10-31 Fix available: Red Hat Openshift Data Foundation 4.19 · Red Hat
  23. 2026-11-03 Fix available: RHSA-2026:93951 · Red Hat
  24. 2026-11-03 Fix available: Red Hat Container Native Virtualization 4.17 · Red Hat
  25. 2026-11-03 Affected versions changed · Red Hat
  26. 2026-11-06 Fix available: Cryostat 4 on RHEL 9 · Red Hat
  27. 2026-11-06 Fix available: RHSA-2026:95360 · Red Hat
  28. 2026-11-07 Affected versions changed · Red Hat

References

Exploit 1

Patch 2

Advisory 1

Other 4

  • TI-2026-42694 Immutable.js: Hash-collision algorithmic complexity denial of service in Immutable.Map/Set CVSS 4.0HIGH 8.7
  • TI-2026-23208 Immutable.js: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in immutable CVSS 4.0HIGH 8.7

Sources

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