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TI-2026-51295 Aliases CVE-2026-73088GHSA-73wf-gq98-2v4g

Browserslist: Uncaught crash / prototype write via untrusted browserslist-stats.json custom stats (normalizeStats)

Priority HIGH 72CWE-1321Published · 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: 26 fixed, 18 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-248.

Summary

Browserslist is a configuration tool for sharing target browsers and Node.js versions between front-end tools. Prior to 4.28.7, normalizeStats() in node.js, reached unconditionally through getStat() and loadStat() on every browserslist() call, processes untrusted browserslist-stats.json, opts.stats, and CLI --stats data with an unguarded for...in loop and plain-object bracket access and assignment, allowing inherited Object.prototype keys including __proto__, toString, valueOf, constructor, hasOwnProperty, and isPrototypeOf to cause an uncaught TypeError or modify the prototype of the returned normalized object. This issue is fixed in version 4.28.7.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00658 51st percentileScored 2026-11-07
Fix Partial browserslist (browserslist): 4.28.7browserslist (npm): 4.28.7Red Hat: 33 advisoriesRed Hat: 26 fixed, 18 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
browserslistbrowserslistbefore 4.28.74.28.7Patch availableCNA
—browserslist (npm)before 4.28.74.28.7Patch availableGHSA-73wf-gq98-2v4g
  • browserslist Vendorbrowserslist Affected before 4.28.7 Fixed in 4.28.7 Patch available CNA
  • browserslist (npm) Vendor— Affected before 4.28.7 Fixed in 4.28.7 Patch available GHSA-73wf-gq98-2v4g

Remediation

  • Fix · CNA browserslist (browserslist) Fixed in 4.28.7
  • Fix · GHSA-73wf-gq98-2v4g browserslist (npm) Fixed in 4.28.7 Advisory →

Red Hat 33 advisories

  • 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
  • RHSA-2026:92510 Released 2026-10-29 · Red Hat rating Critical
    RHOAI 3.4.6 - Red Hat OpenShift AI
    • Red Hat OpenShift AI 3.4 registry.redhat.io/rhoai/odh-built-in-detector-rhel9, registry.redhat.io/rhoai/odh-cli-rhel9, registry.redhat.io/rhoai/odh-dashboard-rhel9 +47
  • 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
Show 30 more Red Hat advisories
  • RHSA-2026:84734 Released 2026-10-19 · Red Hat rating Critical
    RHOAI 3.4.5 - Red Hat OpenShift AI
    • Red Hat OpenShift AI 3.4 registry.redhat.io/rhoai/odh-ai-gateway-payload-processing-rhel9, registry.redhat.io/rhoai/odh-automl-rhel9, registry.redhat.io/rhoai/odh-autorag-rhel9 +47
  • RHSA-2026:83598 Released 2026-10-15 · Red Hat rating Important
    RHTAS 1.4.4 - Red Hat Trusted Artifact Signer Release
    • Red Hat Trusted Artifact Signer 1.4 registry.redhat.io/rhtas/certificate-transparency-rhel9, registry.redhat.io/rhtas/fulcio-rhel9, registry.redhat.io/rhtas/rekor-backfill-redis-rhel9 +6
  • RHSA-2026:70829 Released 2026-09-23 · Red Hat rating Important
    RHTAS 1.3.8 - Red Hat Trusted Artifact Signer Release
    • Red Hat Trusted Artifact Signer 1.3 registry.redhat.io/rhtas/certificate-transparency-rhel9, registry.redhat.io/rhtas/fulcio-rhel9, registry.redhat.io/rhtas/rekor-backfill-redis-rhel9 +6
  • RHSA-2026:70267 Released 2026-09-22 · Red Hat rating Important
    Red Hat Quay 3.14.9
    • Red Hat Quay 3.14 registry.redhat.io/quay/quay-rhel8
  • 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-2026:68755 Released 2026-09-17 · Red Hat rating Important
    Technical preview of the satellite/iop-vulnerability-frontend-rhel9 container image
    • Red Hat Satellite 6.19 registry.redhat.io/satellite/iop-vulnerability-frontend-rhel9
  • RHSA-2026:68754 Released 2026-09-17 · Red Hat rating Important
    Red Hat OpenShift Dev Spaces 3.30.1 Release.
    • Red Hat OpenShift Dev Spaces 3.30 registry.redhat.io/devspaces/code-rhel9, registry.redhat.io/devspaces/dashboard-rhel9, registry.redhat.io/devspaces/openvsx-rhel9 +2
  • RHSA-2026:68748 Released 2026-09-17 · Red Hat rating Important
    General availability of the satellite/iop-advisor-frontend-rhel9 container image
    • Red Hat Satellite 6.19 registry.redhat.io/satellite/iop-advisor-frontend-rhel9
  • RHSA-2026:68681 Released 2026-09-17 · Red Hat rating Important
    Migration Toolkit for Containers (MTC) 1.8.17 update
    • Red Hat Migration Toolkit 1.8 registry.redhat.io/rhmtc/openshift-migration-registry-rhel8, registry.redhat.io/rhmtc/openshift-migration-ui-rhel8
  • RHSA-2026:68253 Released 2026-09-16 · Red Hat rating Important
    Red Hat Edge Manager Version 1.1.4 Security Update
    • Red Hat Edge Manager 1.1 registry.redhat.io/rhem/flightctl-alert-exporter-rhel9, registry.redhat.io/rhem/flightctl-alertmanager-proxy-rhel9, registry.redhat.io/rhem/flightctl-api-rhel9 +10
  • RHSA-2026:68044 Released 2026-09-16 · Red Hat rating Important
    Red Hat Edge Manager Version 1.1.4 Security Update
    • Red Hat Edge Manager 1.1 registry.redhat.io/rhem/flightctl-alert-exporter-rhel10, registry.redhat.io/rhem/flightctl-alertmanager-proxy-rhel10, registry.redhat.io/rhem/flightctl-api-rhel10 +11
  • RHSA-2026:66523 Released 2026-09-10 · Red Hat rating Important
    Red Hat Quay 3.12.22
    • Red Hat Quay 3.12 registry.redhat.io/quay/quay-rhel8
  • RHSA-2026:66084 Released 2026-09-09 · Red Hat rating Important
    Red Hat Quay 3.10.26
    • Red Hat Quay 3.10 registry.redhat.io/quay/quay-rhel8
  • RHSA-2026:65514 Released 2026-09-08 · Red Hat rating Important
    Red Hat Quay 3.9.26
    • Red Hat Quay 3.9 registry.redhat.io/quay/quay-rhel8
  • RHSA-2026:65126 Released 2026-09-08 · Red Hat rating Important
    RHOAI 2.25.11 - 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-tgis-serving-rhel9, registry.redhat.io/rhoai/odh-dashboard-rhel9 +47
  • RHSA-2026:63373 Released 2026-09-03 · 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-2026:63355 Released 2026-09-03 · Red Hat rating Important
    General availability of the satellite/iop-host-inventory-frontend-rhel9 container image
    • Red Hat Satellite 6.19 registry.redhat.io/satellite/iop-host-inventory-frontend-rhel9
  • RHSA-2026:63307 Released 2026-09-03 · Red Hat rating Important
    Red Hat Quay 3.15.8
    • Red Hat Quay 3.15 registry.redhat.io/quay/quay-builder-rhel8, registry.redhat.io/quay/quay-rhel8
  • RHSA-2026:60442 Released 2026-09-01 · Red Hat rating Important
    OpenShift Container Platform 4.22.12 security and extras update
    • Red Hat OpenShift Container Platform 4.22 registry.redhat.io/openshift4/nmstate-console-plugin-rhel9, registry.redhat.io/openshift4/ose-aws-efs-csi-driver-container-rhel9, registry.redhat.io/openshift4/ose-aws-efs-csi-driver-rhel9-operator +2
  • RHSA-2026:60478 Released 2026-09-01 · Red Hat rating Important
    OpenShift Container Platform 4.21.31 security and extras update
    • Red Hat OpenShift Container Platform 4.21 registry.redhat.io/openshift4/nmstate-console-plugin-rhel9, registry.redhat.io/openshift4/ose-cluster-capacity-rhel9
  • RHSA-2026:59583 Released 2026-08-25 · Red Hat rating Important
    Kiali 2.27.3 for Red Hat OpenShift Service Mesh 3.4
    • Red Hat OpenShift Service Mesh 3.4 registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9, registry.redhat.io/openshift-service-mesh/kiali-rhel9
  • RHSA-2026:59566 Released 2026-08-25 · Red Hat rating Important
    Kiali 2.22.9 for Red Hat OpenShift Service Mesh 3.3
    • Red Hat OpenShift Service Mesh 3.3 registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9, registry.redhat.io/openshift-service-mesh/kiali-rhel9
  • RHSA-2026:59561 Released 2026-08-25 · Red Hat rating Important
    Kiali 2.11.16 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-2026:59554 Released 2026-08-25 · Red Hat rating Important
    Kiali 2.17.13 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-2026:59548 Released 2026-08-25 · Red Hat rating Important
    Kiali 2.4.22 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-2026:56357 Released 2026-08-18 · Red Hat rating Important
    Ansible plug-ins for Red Hat Developer Hub Product Release Update
    • Red Hat Ansible Automation Platform 2.2 registry.redhat.io/ansible-automation-platform/automation-portal
  • RHSA-2026:56338 Released 2026-08-18 · 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-2026:54760 Released 2026-08-13 · 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-2026:54518 Released 2026-08-13 · Red Hat rating Important
    Red Hat Hardened Images RPMs Security Update
    • Red Hat Hardened Images grafana12.4-12.4.8-0.1.1.hum1@aarch64, grafana12.4-12.4.8-0.1.1.hum1@src, grafana12.4-12.4.8-0.1.1.hum1@x86_64
  • RHSA-2026:54517 Released 2026-08-13 · Red Hat rating Important
    Red Hat Hardened Images RPMs Security Update
    • Red Hat Hardened Images grafana13.1-13.1.3-0.1.1.hum1@aarch64, grafana13.1-13.1.3-0.1.1.hum1@src, grafana13.1-13.1.3-0.1.1.hum1@x86_64

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Node HealthCheck OperatorAffectedNo fix yet
OpenShift LightspeedAffectedNo fix yet
OpenShift PipelinesAffectedNo fix yet
Red Hat Ansible Automation Platform 2AffectedNo fix planned: Will not fix
Red Hat Build of Podman DesktopAffectedNo fix yet
Red Hat Ceph Storage 9AffectedNo fix yet
Red Hat Connectivity Link 1AffectedNo fix yet
Red Hat Edge Manager 1AffectedNo fix yet
Red Hat Enterprise Linux 8AffectedNo fix yet
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat Enterprise Linux AI (RHEL AI) 3AffectedNo fix yet
Red Hat JBoss Enterprise Application Platform 7AffectedNo fix planned: Will not fix
Red Hat JBoss Enterprise Application Platform 8AffectedNo fix yet
Red Hat OpenShift Container Platform 5AffectedNo fix yet
Red Hat Openshift Data Foundation 4AffectedNo fix yet
Red Hat Single Sign-On 7AffectedNo fix planned: Will not fix
Red Hat build of Apache Camel - HawtIO 4AffectedNo fix yet
Secrets Management Console for Red Hat OpenShiftAffectedNo fix planned: Will not fix
Red Hat Ansible Automation Platform 2.1Fixed RHSA-2026:56338
Red Hat Ansible Automation Platform 2.2Fixed RHSA-2026:56357
Red Hat Discovery 2Fixed RHSA-2026:54760
Red Hat Edge Manager 1.1Fixed RHSA-2026:68044, RHSA-2026:68253
Red Hat Hardened ImagesFixed RHSA-2026:54517, RHSA-2026:54518
Red Hat Migration Toolkit 1.8Fixed RHSA-2026:68681
Red Hat OpenShift AI 2.25Fixed RHSA-2026:65126, RHSA-2026:87410
Red Hat OpenShift AI 3.4Fixed RHSA-2026:84734, RHSA-2026:92510
Red Hat OpenShift Container Platform 4.21Fixed RHSA-2026:60478
Red Hat OpenShift Container Platform 4.22Fixed RHSA-2026:60442
Red Hat OpenShift Dev Spaces 3.30Fixed RHSA-2026:68754
Red Hat OpenShift Service Mesh 3.0Fixed RHSA-2026:59548
Red Hat OpenShift Service Mesh 3.1Fixed RHSA-2026:59561
Red Hat OpenShift Service Mesh 3.2Fixed RHSA-2026:59554
Red Hat OpenShift Service Mesh 3.3Fixed RHSA-2026:59566
Red Hat OpenShift Service Mesh 3.4Fixed RHSA-2026:59583
Red Hat Openshift Data Foundation 4.19Fixed RHSA-2026:92650
Red Hat Quay 3.10Fixed RHSA-2026:66084
Red Hat Quay 3.12Fixed RHSA-2026:66523
Red Hat Quay 3.14Fixed RHSA-2026:70267
Red Hat Quay 3.15Fixed RHSA-2026:63307
Red Hat Quay 3.9Fixed RHSA-2026:65514
Red Hat Satellite 6.18Fixed RHSA-2026:63373, RHSA-2026:68765
Red Hat Satellite 6.19Fixed RHSA-2026:63355, RHSA-2026:68748, RHSA-2026:68755
Red Hat Trusted Artifact Signer 1.3Fixed RHSA-2026:70829
Red Hat Trusted Artifact Signer 1.4Fixed RHSA-2026:83598
Not affected: 38 products
  • Cryostat 4
  • Gatekeeper 3
  • OpenShift Service Mesh 3
  • Red Hat 3scale API Management Platform 2
  • Red Hat AMQ Broker 7
  • Red Hat Ansible Automation Platform 2
  • Red Hat Build of Keycloak
  • Red Hat Data Grid 8
  • Red Hat Developer Hub 1
  • Red Hat Discovery 2
  • Red Hat Edge Manager 1.1
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat Hardened Images
  • Red Hat JBoss Enterprise Application Platform 8
  • Red Hat JBoss Enterprise Application Platform Expansion Pack
  • Red Hat Migration Toolkit 1.8
  • Red Hat OpenShift AI (RHOAI)
  • Red Hat OpenShift AI 2.25
  • Red Hat OpenShift AI 3.4
  • Red Hat OpenShift Container Platform 4
  • Red Hat OpenShift Container Platform 4.21
  • Red Hat OpenShift Container Platform 4.22
  • Red Hat OpenShift Container Platform 5
  • Red Hat OpenShift Dev Spaces 3.30
  • Red Hat OpenShift Service Mesh 3.4
  • Red Hat Openshift Data Foundation 4.19
  • Red Hat Quay 3.10
  • Red Hat Quay 3.12
  • Red Hat Quay 3.14
  • Red Hat Quay 3.15
  • Red Hat Quay 3.9
  • Red Hat Satellite 6
  • Red Hat Trusted Artifact Signer 1.3
  • Red Hat Trusted Artifact Signer 1.4
  • Red Hat build of Apache Camel for Spring Boot 4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-73088
  2. 2026-10-03 Alias added: GHSA-73wf-gq98-2v4g
  3. 2026-10-11 EPSS moved to the 50th–90th percentile
  4. 2026-10-16 Fix available: RHSA-2026:83598 · Red Hat
  5. 2026-10-16 Fix available: Red Hat Trusted Artifact Signer 1.4 · Red Hat
  6. 2026-10-20 Fix available: RHSA-2026:84734 · Red Hat
  7. 2026-10-20 Fix available: Red Hat OpenShift AI 3.4 · Red Hat
  8. 2026-10-22 Fix available: RHSA-2026:87410 · Red Hat
  9. 2026-10-23 Affected versions changed · Red Hat
  10. 2026-10-27 Affected versions changed · Red Hat
  11. 2026-10-30 Fix available: RHSA-2026:92510 · Red Hat
  12. 2026-10-30 Affected versions changed · Red Hat
  13. 2026-10-30 Affected versions changed · Red Hat
  14. 2026-10-30 Fix available: Red Hat Openshift Data Foundation 4.19 · Red Hat
  15. 2026-10-31 Fix available: RHSA-2026:92650 · Red Hat

References

Advisory 1

Other 4

  • TI-2026-51296 Browserslist: Unbounded memory growth (no cache eviction) via distinct query results, leading to eventual OOM CVSS 3.1HIGH 7.5

Sources

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