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TI-2026-33367 Aliases CVE-2026-45623GHSA-6g55-p6wh-862q

PostCSS: Arbitrary file read and information disclosure via attacker-controlled sourceMappingURL in CSS comments

Priority HIGH 78CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · High
Fix status
Partial Red Hat: 36 fixed, 20 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-200.

Summary

PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree. In versions 8.5.11 and prior, the PreviousMap parses the /*# sourceMappingURL=PATH */ comment from any CSS string passed to process() and dereferences PATH against the local filesystem with no scheme, allowlist, or traversal check. An attacker who controls the CSS input can cause the host process to read any file readable by Node and leak the first ~10 bytes of its content through the resulting JSON.parse SyntaxError message. The bug also yields a precise file-existence oracle and a controllable-read primitive that may be combined with large-file targets for DoS. The behaviour is triggered with PostCSS's default options — no from, no map, no plugins required — and is therefore reachable from any pipeline that runs untrusted CSS through PostCSS (CMS themes, user-uploaded styles, browser-extension/userstyle processors, build pipelines for third-party packages, blog comment renderers, etc.). This issue has been fixed in version 8.5.12.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00608 49th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial postcss (postcss): 8.5.12postcss (npm): 8.5.12Red Hat: 40 advisoriesRed Hat: 36 fixed, 20 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
postcsspostcssbefore 8.5.128.5.12Patch availableCNA
—postcss (npm)before 8.5.128.5.12Patch availableGHSA-6g55-p6wh-862q
  • postcss Vendorpostcss Affected before 8.5.12 Fixed in 8.5.12 Patch available CNA
  • postcss (npm) Vendor— Affected before 8.5.12 Fixed in 8.5.12 Patch available GHSA-6g55-p6wh-862q

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:postcss:postcss:*:*:*:*:*:node.js:*:*before 8.5.12Vulnerablepostcss
  • cpe:2.3:a:postcss:postcss:*:*:*:*:*:node.js:*:* Versions before 8.5.12 Vulnerable ·postcss

Remediation

  • Fix · CNA postcss (postcss) Fixed in 8.5.12
  • Fix · GHSA-6g55-p6wh-862q postcss (npm) Fixed in 8.5.12 Advisory →

Red Hat 40 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-2026:74621 Released 2026-10-01 · Red Hat rating Moderate
    General availability of the satellite/iop-advisor-frontend-rhel9 container image
    • Red Hat Satellite 6.19 registry.redhat.io/satellite/iop-advisor-frontend-rhel9
Show 37 more Red Hat advisories
  • RHSA-2026:74609 Released 2026-10-01 · Red Hat rating Important
    Cluster Observability Operator 1.5.3
    • Cluster Observability Operator 1.5 registry.redhat.io/cluster-observability-operator/alertmanager-rhel9, registry.redhat.io/cluster-observability-operator/cluster-observability-rhel9-operator, registry.redhat.io/cluster-observability-operator/distributed-tracing-console-plugin-pf4-rhel9 +13
  • 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-2026:70587 Released 2026-10-01 · Red Hat rating Important
    OpenShift Container Platform 4.17.58 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-2026:67858 Released 2026-09-24 · Red Hat rating Important
    OpenShift Container Platform 4.15.69 bug fix and security update
    • Red Hat OpenShift Container Platform 4.15 registry.redhat.io/openshift4/ose-cli-artifacts, registry.redhat.io/openshift4/ose-cluster-config-api-rhel9, registry.redhat.io/openshift4/ose-cluster-openshift-controller-manager-rhel9-operator +10
  • RHSA-2026:67838 Released 2026-09-24 · Red Hat rating Important
    OpenShift Container Platform 4.14.74 bug fix and security update
    • Red Hat OpenShift Container Platform 4.14 registry.redhat.io/openshift4/ose-aws-ebs-csi-driver-rhel8-operator, registry.redhat.io/openshift4/ose-console, registry.redhat.io/openshift4/ose-csi-driver-nfs-rhel8 +4
  • RHSA-2026:67936 Released 2026-09-24 · Red Hat rating Important
    OpenShift Container Platform 4.16.71 bug fix and security update
    • Red Hat OpenShift Container Platform 4.16 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-2026:68755 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-2026:65852 Released 2026-09-17 · Red Hat rating Important
    OpenShift Container Platform 4.18.55 bug fix and security update
    • Red Hat OpenShift Container Platform 4.18 registry.redhat.io/openshift4/aws-kms-encryption-provider-rhel9, registry.redhat.io/openshift4/ose-apiserver-network-proxy-rhel9, registry.redhat.io/openshift4/ose-azure-cluster-api-controllers-rhel9 +19
  • RHSA-2026:63047 Released 2026-09-09 · Red Hat rating Important
    OpenShift Container Platform 4.19.46 bug fix and security update
    • Red Hat OpenShift Container Platform 4.19 registry.redhat.io/openshift4/egress-router-cni-rhel9, registry.redhat.io/openshift4/ose-baremetal-cluster-api-controllers-rhel9, registry.redhat.io/openshift4/ose-console-rhel9 +4
  • RHSA-2026:63046 Released 2026-09-08 · Red Hat rating Important
    OpenShift Container Platform 4.21.32 bug fix and security update
    • Red Hat OpenShift Container Platform 4.21 registry.redhat.io/openshift4/ose-agent-installer-ui-rhel9, registry.redhat.io/openshift4/ose-baremetal-installer-rhel9, registry.redhat.io/openshift4/ose-cluster-autoscaler-rhel9-operator +6
  • RHSA-2026:63103 Released 2026-09-08 · Red Hat rating Important
    OpenShift Container Platform 4.20.37 bug fix and security update
    • Red Hat OpenShift Container Platform 4.20 registry.redhat.io/openshift4/ose-agent-installer-ui-rhel9, registry.redhat.io/openshift4/ose-console-rhel9, registry.redhat.io/openshift4/ose-prometheus-rhel9 +1
  • 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-2026:62260 Released 2026-09-01 · Red Hat rating Important
    Red Hat OpenShift Dev Spaces 3.30.0 Release.
    • Red Hat OpenShift Dev Spaces 3.30 registry.redhat.io/devspaces/code-rhel9, registry.redhat.io/devspaces/configbump-rhel9, registry.redhat.io/devspaces/dashboard-rhel9 +7
  • RHSA-2026:60441 Released 2026-09-01 · Red Hat rating Important
    OpenShift Container Platform 4.22.12 bug fix and security update
    • Red Hat OpenShift Container Platform 4.22 registry.redhat.io/openshift4/egress-router-cni-rhel9, registry.redhat.io/openshift4/ose-agent-installer-ui-rhel9, registry.redhat.io/openshift4/ose-aws-ebs-csi-driver-rhel9-operator +23
  • RHSA-2026:61783 Released 2026-08-31 · 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-2026:60520 Released 2026-08-27 · Red Hat rating Critical
    RHOAI 3.4.4 - Red Hat OpenShift AI
    • Red Hat OpenShift AI 3.4 registry.redhat.io/rhoai/odh-automl-rhel9, registry.redhat.io/rhoai/odh-autorag-rhel9, registry.redhat.io/rhoai/odh-built-in-detector-rhel9 +47
  • RHSA-2026:60390 Released 2026-08-26 · Red Hat rating Important
    Red Hat Advanced Cluster Management for Kubernetes v2.13.11 security update
    • Red Hat Advanced Cluster Management for Kubernetes 2.13 registry.redhat.io/rhacm2/acm-governance-policy-addon-controller-rhel9, registry.redhat.io/rhacm2/acm-grafana-rhel9, registry.redhat.io/rhacm2/acm-multicluster-observability-addon-rhel9 +23
  • RHSA-2026:60388 Released 2026-08-26 · Red Hat rating Important
    Red Hat Advanced Cluster Management for Kubernetes v2.14.4 security update
    • Red Hat Advanced Cluster Management for Kubernetes 2.14 registry.redhat.io/rhacm2/acm-governance-policy-addon-controller-rhel9, registry.redhat.io/rhacm2/acm-grafana-rhel9, registry.redhat.io/rhacm2/acm-multicluster-observability-addon-rhel9 +26
  • RHSA-2026:60387 Released 2026-08-26 · Red Hat rating Important
    Red Hat Advanced Cluster Management for Kubernetes v2.11.11 security update
    • Red Hat Advanced Cluster Management for Kubernetes 2.11 registry.redhat.io/rhacm2/acm-governance-policy-addon-controller-rhel9, registry.redhat.io/rhacm2/acm-must-gather-rhel9, registry.redhat.io/rhacm2/acm-prometheus-config-reloader-rhel9 +24
  • RHSA-2026:60386 Released 2026-08-26 · Red Hat rating Important
    Red Hat Advanced Cluster Management for Kubernetes v2.17.1 security update
    • Red Hat Advanced Cluster Management for Kubernetes 2.17 registry.redhat.io/rhacm2/acm-governance-policy-addon-controller-rhel9, registry.redhat.io/rhacm2/acm-grafana-rhel9, registry.redhat.io/rhacm2/acm-multicluster-observability-addon-rhel9 +31
  • RHSA-2026:59593 Released 2026-08-25 · Red Hat rating Important
    multicluster engine for Kubernetes v2.17.2 security update
    • multicluster engine for Kubernetes 2.17 registry.redhat.io/multicluster-engine/cluster-api-provider-kubevirt-rhel9, registry.redhat.io/multicluster-engine/cluster-curator-controller-rhel9, registry.redhat.io/multicluster-engine/cluster-image-set-controller-rhel9 +6
  • 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-2026:59559 Released 2026-08-25 · Red Hat rating Important
    multicluster engine for Kubernetes v2.9.7 security update
    • multicluster engine for Kubernetes 2.9 registry.redhat.io/multicluster-engine/addon-manager-rhel9, registry.redhat.io/multicluster-engine/cluster-curator-controller-rhel9, registry.redhat.io/multicluster-engine/cluster-image-set-controller-rhel9 +15
  • RHSA-2026:59558 Released 2026-08-25 · Red Hat rating Important
    multicluster engine for Kubernetes v2.8.10 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-agent-rhel9 +20
  • 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-2026:57590 Released 2026-08-20 · Red Hat rating Important
    rh-podman-desktop security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Extensions Channel (v. 10) rh-podman-desktop-1.1.2-1.el10_2
  • RHSA-2026:57194 Released 2026-08-19 · Red Hat rating Important
    multicluster engine for Kubernetes v2.11.5 security update
    • multicluster engine for Kubernetes 2.11 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 +11
  • RHSA-2026:57191 Released 2026-08-19 · Red Hat rating Important
    Red Hat Advanced Cluster Management for Kubernetes v2.16.3 security update
    • Red Hat Advanced Cluster Management for Kubernetes 2.16 registry.redhat.io/rhacm2/acm-grafana-rhel9, registry.redhat.io/rhacm2/acm-prometheus-config-reloader-rhel9, registry.redhat.io/rhacm2/acm-prometheus-rhel9 +15
  • 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-2026:54427 Released 2026-08-12 · Red Hat rating Important
    Red Hat Advanced Cluster Management for Kubernetes v2.15.5 security update
    • Red Hat Advanced Cluster Management for Kubernetes 2.15 registry.redhat.io/rhacm2/acm-prometheus-config-reloader-rhel9, registry.redhat.io/rhacm2/acm-prometheus-rhel9, registry.redhat.io/rhacm2/console-rhel9 +9

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Migration Toolkit for ContainersAffectedNo fix yet
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 KeycloakAffectedNo fix yet
Red Hat Build of Podman DesktopAffectedNo fix yet
Red Hat Connectivity Link 1AffectedNo fix yet
Red Hat Enterprise Linux 10AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 9AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux AI (RHEL AI) 3AffectedNo fix yet
Red Hat JBoss Enterprise Application Platform 7AffectedNo fix planned: Will not fix
Red Hat OpenShift AI (RHOAI)AffectedNo fix yet
Red Hat Openshift Data Foundation 4AffectedNo fix yet
Red Hat Quay 3AffectedNo fix yet
Red Hat Satellite 6AffectedNo fix yet
Red Hat Single Sign-On 7AffectedNo fix planned: Will not fix
Red Hat build of Apache Camel - HawtIO 4AffectedNo fix yet
Red Hat build of Apicurio Registry 3AffectedNo fix yet
streams for Apache Kafka 3AffectedNo fix yet
Cluster Observability Operator 1.5Fixed RHSA-2026:74609
Red Hat Advanced Cluster Management for Kubernetes 2.11Fixed RHSA-2026:60387
Red Hat Advanced Cluster Management for Kubernetes 2.13Fixed RHSA-2026:60390
Red Hat Advanced Cluster Management for Kubernetes 2.14Fixed RHSA-2026:60388
Red Hat Advanced Cluster Management for Kubernetes 2.15Fixed RHSA-2026:54427
Red Hat Advanced Cluster Management for Kubernetes 2.16Fixed RHSA-2026:57191
Red Hat Advanced Cluster Management for Kubernetes 2.17Fixed RHSA-2026:60386
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-2026:61783
Red Hat Enterprise Linux Extensions Channel (v. 10)Fixed RHSA-2026:57590
Red Hat OpenShift AI 2.25Fixed RHSA-2026:65126
Red Hat OpenShift AI 3.4Fixed RHSA-2026:60520, RHSA-2026:84734
Red Hat OpenShift Container Platform 4.14Fixed RHSA-2026:67838
Red Hat OpenShift Container Platform 4.15Fixed RHSA-2026:67858
Red Hat OpenShift Container Platform 4.16Fixed RHSA-2026:67936
Red Hat OpenShift Container Platform 4.17Fixed RHSA-2026:70587
Red Hat OpenShift Container Platform 4.18Fixed RHSA-2026:65852
Red Hat OpenShift Container Platform 4.19Fixed RHSA-2026:63047
Red Hat OpenShift Container Platform 4.20Fixed RHSA-2026:63103
Red Hat OpenShift Container Platform 4.21Fixed RHSA-2026:63046
Red Hat OpenShift Container Platform 4.22Fixed RHSA-2026:60441
Red Hat OpenShift Dev Spaces 3.30Fixed RHSA-2026:62260, 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 Satellite 6.18Fixed RHSA-2026:63373
Red Hat Satellite 6.19Fixed RHSA-2026:63355, RHSA-2026:68755, RHSA-2026:74621
Red Hat Satellite 6.19 for RHEL 9Fixed RHSA-2026:74503
Red Hat Trusted Artifact Signer 1.4Fixed RHSA-2026:83598
multicluster engine for Kubernetes 2.11Fixed RHSA-2026:57194
multicluster engine for Kubernetes 2.17Fixed RHSA-2026:59593
multicluster engine for Kubernetes 2.8Fixed RHSA-2026:59558
multicluster engine for Kubernetes 2.9Fixed RHSA-2026:59559
Not affected: 53 products
  • Cluster Observability Operator 1.5
  • Cryostat 4
  • Gatekeeper 3
  • OpenShift Lightspeed
  • OpenShift Service Mesh 3
  • Red Hat 3scale API Management Platform 2
  • Red Hat AMQ Broker 7
  • Red Hat Advanced Cluster Management for Kubernetes 2
  • Red Hat Advanced Cluster Management for Kubernetes 2.11
  • Red Hat Advanced Cluster Management for Kubernetes 2.13
  • Red Hat Advanced Cluster Management for Kubernetes 2.14
  • Red Hat Advanced Cluster Management for Kubernetes 2.15
  • Red Hat Advanced Cluster Management for Kubernetes 2.16
  • Red Hat Advanced Cluster Management for Kubernetes 2.17
  • Red Hat Ansible Automation Platform 2
  • Red Hat Data Grid 8
  • Red Hat Developer Hub 1
  • Red Hat Discovery 2
  • 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 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 4.14
  • Red Hat OpenShift Container Platform 4.15
  • 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 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 Virtualization 4
  • Red Hat Openshift Data Foundation 4
  • Red Hat Quay 3
  • Red Hat Satellite 6.19 for RHEL 9
  • Red Hat Trusted Artifact Signer
  • Red Hat Trusted Artifact Signer 1.4
  • Red Hat build of Apache Camel for Spring Boot 4
  • multicluster engine for Kubernetes 2.11
  • multicluster engine for Kubernetes 2.17
  • multicluster engine for Kubernetes 2.8
  • multicluster engine for Kubernetes 2.9
  • streams for Apache Kafka 2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-45623
  2. 2026-10-03 Alias added: GHSA-6g55-p6wh-862q
  3. 2026-10-08 Affected versions changed · Red Hat
  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. 2026-10-18 Affected versions changed · Red Hat
  7. 2026-10-20 Fix available: RHSA-2026:84734 · Red Hat
  8. 2026-10-20 Affected versions changed · Red Hat
  9. 2026-10-21 Affected versions changed · Red Hat
  10. 2026-10-24 Affected versions changed · Red Hat
  11. 2026-10-27 Affected versions changed · Red Hat
  12. 2026-10-30 Affected versions changed · Red Hat
  13. 2026-11-03 Affected versions changed · Red Hat
  14. 2026-11-06 Fix available: Cluster Observability Operator 1.5 · Red Hat

References

Exploit 1

Other 4

  • TI-2026-48533 Information disclosure in postcss CVSS 4.0MEDIUM 6.3
  • TI-2021-06075 Regular expression denial of service (ReDoS) in postcss CVSS 3.1HIGH 7.5
  • TI-2023-23794 An issue was discovered in PostCSS before 8.4.31. CVSS 3.1MEDIUM 5.3
  • TI-2021-06061 Regular expression denial of service (ReDoS) in postcss CVSS 3.1MEDIUM 5.3

Sources

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