{
  "threat_severity" : "Important",
  "public_date" : "2026-01-20T00:40:48Z",
  "bugzilla" : {
    "description" : "node-tar: tar: node-tar: Arbitrary file overwrite via Unicode path collision race condition",
    "id" : "2431036",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2431036"
  },
  "cvss3" : {
    "cvss3_base_score" : "8.8",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:L",
    "status" : "verified"
  },
  "cwe" : "CWE-367",
  "details" : [ "node-tar,a Tar for Node.js, has a race condition vulnerability in versions up to and including 7.5.3. This is due to an incomplete handling of Unicode path collisions in the `path-reservations` system. On case-insensitive or normalization-insensitive filesystems (such as macOS APFS, In which it has been tested), the library fails to lock colliding paths (e.g., `ß` and `ss`), allowing them to be processed in parallel. This bypasses the library's internal concurrency safeguards and permits Symlink Poisoning attacks via race conditions. The library uses a `PathReservations` system to ensure that metadata checks and file operations for the same path are serialized. This prevents race conditions where one entry might clobber another concurrently. This is a Race Condition which enables Arbitrary File Overwrite. This vulnerability affects users and systems using node-tar on macOS (APFS/HFS+). Because of using `NFD` Unicode normalization (in which `ß` and `ss` are different), conflicting paths do not have their order properly preserved under filesystems that ignore Unicode normalization (e.g., APFS (in which `ß` causes an inode collision with `ss`)). This enables an attacker to circumvent internal parallelization locks (`PathReservations`) using conflicting filenames within a malicious tar archive. The patch in version 7.5.4 updates `path-reservations.js` to use a normalization form that matches the target filesystem's behavior (e.g., `NFKD`), followed by first `toLocaleLowerCase('en')` and then `toLocaleUpperCase('en')`. As a workaround, users who cannot upgrade promptly, and who are programmatically using `node-tar` to extract arbitrary tarball data should filter out all `SymbolicLink` entries (as npm does) to defend against arbitrary file writes via this file system entry name collision issue.", "A flaw was found in node-tar, a library for Node.js. This race condition vulnerability occurs due to incomplete handling of Unicode path collisions within the `path-reservations` system on case-insensitive filesystems, such as macOS APFS. A remote attacker can exploit this by providing a specially crafted tar archive containing filenames that cause these collisions, bypassing internal concurrency safeguards. Successful exploitation can lead to arbitrary file overwrite." ],
  "statement" : "This vulnerability is rated Important for Red Hat products. The `node-tar` library is susceptible to a race condition due to incomplete handling of Unicode path collisions, which can lead to arbitrary file overwrites via symlink poisoning. However, this issue primarily affects case-insensitive or normalization-insensitive filesystems. Red Hat Enterprise Linux and other Red Hat products typically utilize case-sensitive filesystems, which may limit the direct impact of this flaw in default configurations.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "release_date" : "2026-05-19T00:00:00Z",
    "advisory" : "RHSA-2026:18480",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10.2",
    "package" : "linux-sgx-0:2.26-7.el10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2026-05-19T00:00:00Z",
    "advisory" : "RHSA-2026:18868",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "linux-sgx-0:2.26-7.el9"
  }, {
    "product_name" : "Red Hat OpenShift Dev Spaces 3.27",
    "release_date" : "2026-03-30T00:00:00Z",
    "advisory" : "RHSA-2026:6192",
    "cpe" : "cpe:/a:redhat:openshift_devspaces:3.27::el9",
    "package" : "devspaces/udi-rhel9:1774451954"
  }, {
    "product_name" : "Red Hat Trusted Artifact Signer 1.2",
    "release_date" : "2026-02-18T00:00:00Z",
    "advisory" : "RHSA-2026:2926",
    "cpe" : "cpe:/a:redhat:trusted_artifact_signer:1.2::el9",
    "package" : "rhtas/rekor-search-ui-rhel9:1770739056"
  }, {
    "product_name" : "Red Hat Trusted Artifact Signer 1.3",
    "release_date" : "2026-02-05T00:00:00Z",
    "advisory" : "RHSA-2026:2144",
    "cpe" : "cpe:/a:redhat:trusted_artifact_signer:1.3::el9",
    "package" : "rhtas/rekor-search-ui-rhel9:1770107452"
  } ],
  "package_state" : [ {
    "product_name" : "Confidential Compute Attestation",
    "fix_state" : "Affected",
    "package_name" : "openshift-sandboxed-containers/osc-pccs",
    "cpe" : "cpe:/a:redhat:confidential_compute_attestation:1"
  }, {
    "product_name" : "Cryostat 4",
    "fix_state" : "Not affected",
    "package_name" : "io.cryostat-cryostat",
    "cpe" : "cpe:/a:redhat:cryostat:4"
  }, {
    "product_name" : "Logging Subsystem for Red Hat OpenShift",
    "fix_state" : "Will not fix",
    "package_name" : "openshift-logging/kibana6-rhel8",
    "cpe" : "cpe:/a:redhat:logging:5"
  }, {
    "product_name" : "Migration Toolkit for Containers",
    "fix_state" : "Affected",
    "package_name" : "rhmtc/openshift-migration-ui-rhel8",
    "cpe" : "cpe:/a:redhat:rhmt:1"
  }, {
    "product_name" : "Multicluster Engine for Kubernetes",
    "fix_state" : "Not affected",
    "package_name" : "multicluster-engine/console-mce-rhel8",
    "cpe" : "cpe:/a:redhat:multicluster_engine"
  }, {
    "product_name" : "Multicluster Engine for Kubernetes",
    "fix_state" : "Not affected",
    "package_name" : "multicluster-engine/console-mce-rhel9",
    "cpe" : "cpe:/a:redhat:multicluster_engine"
  }, {
    "product_name" : "Network Observability Operator",
    "fix_state" : "Affected",
    "package_name" : "network-observability/network-observability-console-plugin-rhel9",
    "cpe" : "cpe:/a:redhat:network_observ_optr:1"
  }, {
    "product_name" : "Node HealthCheck Operator",
    "fix_state" : "Not affected",
    "package_name" : "workload-availability/node-remediation-console-rhel9",
    "cpe" : "cpe:/a:redhat:workload_availability_nhc:0"
  }, {
    "product_name" : "OpenShift Lightspeed",
    "fix_state" : "Will not fix",
    "package_name" : "openshift-lightspeed/lightspeed-to-dataverse-exporter-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_lightspeed"
  }, {
    "product_name" : "OpenShift Pipelines",
    "fix_state" : "Will not fix",
    "package_name" : "openshift-pipelines/pipelines-console-plugin-rhel8",
    "cpe" : "cpe:/a:redhat:openshift_pipelines:1"
  }, {
    "product_name" : "OpenShift Serverless",
    "fix_state" : "Affected",
    "package_name" : "openshift-serverless-1/kn-eventing-integrations-transform-jsonata-rhel9",
    "cpe" : "cpe:/a:redhat:serverless:1"
  }, {
    "product_name" : "Red Hat 3scale API Management Platform 2",
    "fix_state" : "Will not fix",
    "package_name" : "3scale-amp20/system",
    "cpe" : "cpe:/a:redhat:red_hat_3scale_amp:2"
  }, {
    "product_name" : "Red Hat 3scale API Management Platform 2",
    "fix_state" : "Will not fix",
    "package_name" : "3scale-amp21/system",
    "cpe" : "cpe:/a:redhat:red_hat_3scale_amp:2"
  }, {
    "product_name" : "Red Hat 3scale API Management Platform 2",
    "fix_state" : "Will not fix",
    "package_name" : "3scale-amp22/system",
    "cpe" : "cpe:/a:redhat:red_hat_3scale_amp:2"
  }, {
    "product_name" : "Red Hat 3scale API Management Platform 2",
    "fix_state" : "Will not fix",
    "package_name" : "3scale-amp24/system",
    "cpe" : "cpe:/a:redhat:red_hat_3scale_amp:2"
  }, {
    "product_name" : "Red Hat 3scale API Management Platform 2",
    "fix_state" : "Will not fix",
    "package_name" : "3scale-amp25/system",
    "cpe" : "cpe:/a:redhat:red_hat_3scale_amp:2"
  }, {
    "product_name" : "Red Hat 3scale API Management Platform 2",
    "fix_state" : "Will not fix",
    "package_name" : "3scale-amp26/system",
    "cpe" : "cpe:/a:redhat:red_hat_3scale_amp:2"
  }, {
    "product_name" : "Red Hat 3scale API Management Platform 2",
    "fix_state" : "Will not fix",
    "package_name" : "3scale-amp2/system-rhel7",
    "cpe" : "cpe:/a:redhat:red_hat_3scale_amp:2"
  }, {
    "product_name" : "Red Hat 3scale API Management Platform 2",
    "fix_state" : "Will not fix",
    "package_name" : "3scale-amp2/system-rhel8",
    "cpe" : "cpe:/a:redhat:red_hat_3scale_amp:2"
  }, {
    "product_name" : "Red Hat 3scale API Management Platform 2",
    "fix_state" : "Will not fix",
    "package_name" : "3scale-amp2/system-rhel9",
    "cpe" : "cpe:/a:redhat:red_hat_3scale_amp:2"
  }, {
    "product_name" : "Red Hat Advanced Cluster Management for Kubernetes 2",
    "fix_state" : "Not affected",
    "package_name" : "rhacm2/console-rhel9",
    "cpe" : "cpe:/a:redhat:acm:2"
  }, {
    "product_name" : "Red Hat AMQ Broker 7",
    "fix_state" : "Not affected",
    "package_name" : "org.jolokia-jolokia-parent",
    "cpe" : "cpe:/a:redhat:amq_broker:7"
  }, {
    "product_name" : "Red Hat Ansible Automation Platform 2",
    "fix_state" : "Not affected",
    "package_name" : "ansible-automation-platform-tech-preview/mcp-server-rhel9",
    "cpe" : "cpe:/a:redhat:ansible_automation_platform:2"
  }, {
    "product_name" : "Red Hat build of Apache Camel - HawtIO 4",
    "fix_state" : "Not affected",
    "package_name" : "io.hawt-project",
    "cpe" : "cpe:/a:redhat:apache_camel_hawtio:4"
  }, {
    "product_name" : "Red Hat Connectivity Link 1",
    "fix_state" : "Affected",
    "package_name" : "rhcl-1/rhcl-console-plugin-rhel9",
    "cpe" : "cpe:/a:redhat:connectivity_link:1"
  }, {
    "product_name" : "Red Hat Developer Hub",
    "fix_state" : "Affected",
    "package_name" : "rhdh/rhdh-hub-rhel9",
    "cpe" : "cpe:/a:redhat:rhdh:1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Not affected",
    "package_name" : "nodejs22",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Not affected",
    "package_name" : "nodejs24",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Not affected",
    "package_name" : "tar",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "tar",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "tar",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "grafana",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "mozjs60",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "nodejs:20/nodejs",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "nodejs:22/nodejs",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "nodejs:24/nodejs",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "tar",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "gjs",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "grafana",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "nodejs:20/nodejs",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "nodejs:22/nodejs",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "nodejs:24/nodejs",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "polkit",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "tar",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux AI (RHEL AI) 3",
    "fix_state" : "Will not fix",
    "package_name" : "rhelai3/bootc-cuda-rhel9",
    "cpe" : "cpe:/a:redhat:enterprise_linux_ai:3"
  }, {
    "product_name" : "Red Hat Fuse 7",
    "fix_state" : "Will not fix",
    "package_name" : "io.hawt-project",
    "cpe" : "cpe:/a:redhat:jboss_fuse:7"
  }, {
    "product_name" : "Red Hat JBoss Enterprise Application Platform 7",
    "fix_state" : "Not affected",
    "package_name" : "io.hawt-project",
    "cpe" : "cpe:/a:redhat:jboss_enterprise_application_platform:7"
  }, {
    "product_name" : "Red Hat JBoss Enterprise Application Platform 8",
    "fix_state" : "Not affected",
    "package_name" : "io.hawt-project",
    "cpe" : "cpe:/a:redhat:jboss_enterprise_application_platform:8"
  }, {
    "product_name" : "Red Hat JBoss Enterprise Application Platform Expansion Pack",
    "fix_state" : "Not affected",
    "package_name" : "io.hawt-project",
    "cpe" : "cpe:/a:redhat:jbosseapxp"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-dashboard-rhel8",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-dashboard-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Will not fix",
    "package_name" : "openshift4/ose-console",
    "cpe" : "cpe:/a:redhat:openshift:4"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Not affected",
    "package_name" : "rhcos",
    "cpe" : "cpe:/a:redhat:openshift:4"
  }, {
    "product_name" : "Red Hat Openshift Data Foundation 4",
    "fix_state" : "Affected",
    "package_name" : "odf4/mcg-core-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_data_foundation:4"
  }, {
    "product_name" : "Red Hat Openshift Data Foundation 4",
    "fix_state" : "Affected",
    "package_name" : "odf4/odf-console-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_data_foundation:4"
  }, {
    "product_name" : "Red Hat OpenShift GitOps",
    "fix_state" : "Will not fix",
    "package_name" : "openshift-gitops-1/argocd-rhel8",
    "cpe" : "cpe:/a:redhat:openshift_gitops:1"
  }, {
    "product_name" : "Red Hat Process Automation 7",
    "fix_state" : "Not affected",
    "package_name" : "org.uberfire-uberfire-parent",
    "cpe" : "cpe:/a:redhat:jboss_enterprise_bpms_platform:7"
  }, {
    "product_name" : "Red Hat Quay 3",
    "fix_state" : "Not affected",
    "package_name" : "quay/quay-rhel9",
    "cpe" : "cpe:/a:redhat:quay:3"
  }, {
    "product_name" : "Red Hat Satellite 6",
    "fix_state" : "Affected",
    "package_name" : "satellite/iop-remediations-rhel9",
    "cpe" : "cpe:/a:redhat:satellite:6"
  }, {
    "product_name" : "Red Hat Single Sign-On 7",
    "fix_state" : "Not affected",
    "package_name" : "org.keycloak-keycloak-parent",
    "cpe" : "cpe:/a:redhat:red_hat_single_sign_on:7"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-23950\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-23950\nhttps://github.com/isaacs/node-tar/commit/3b1abfae650056edfabcbe0a0df5954d390521e6\nhttps://github.com/isaacs/node-tar/security/advisories/GHSA-r6q2-hw4h-h46w" ],
  "name" : "CVE-2026-23950",
  "mitigation" : {
    "value" : "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
    "lang" : "en:us"
  },
  "csaw" : false
}