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Fencer Vulns
high 8.2

CVE-2026-23745 json

node-tar Vulnerable to Arbitrary File Overwrite and Symlink Poisoning via Insufficient Path Sanitization

published 2026-01-16 9 mo ago modified 2026-09-10 1 mo ago also EUVD-2026-2909 , GHSA-8qq5-rm4j-mr97

cvss
8.2
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits
0
none known

Summary

node-tar is a Tar for Node.js. The node-tar library (<= 7.5.2) fails to sanitize the linkpath of Link (hardlink) and SymbolicLink entries when preservePaths is false (the default secure behavior). This allows malicious archives to bypass the extraction root restriction, leading to Arbitrary File Overwrite via hardlinks and Symlink Poisoning via absolute symlink targets. This vulnerability is fixed in 7.5.3.

Patch / fix

  • npm tar 7.5.3
  • Red Hat Red Hat Enterprise Linux 10 0:2.26-7.el10
  • Red Hat Red Hat Enterprise Linux 9 0:2.26-7.el9
  • Red Hat Network Observability (NETOBSERV) 1.11.0 1771227650
  • Red Hat Red Hat Migration Toolkit 1.8 1783690532
  • Red Hat Red Hat OpenShift AI 2.25 1772093424
  • Red Hat Red Hat OpenShift AI 3.3 1779189627
  • Red Hat Red Hat OpenShift Dev Spaces 3.27 1774451954
  • Red Hat Red Hat Trusted Artifact Signer 1.2 1770739056
  • Red Hat Red Hat Trusted Artifact Signer 1.3 1770107452
  • node-tar Debian 12 6.1.13+~cs7.0.5-1+deb12u1
  • node-tar Debian 13 6.2.1+~cs7.0.8-1+deb13u1
  • node-tar Debian 14 6.2.1+ds1+~cs6.1.13-6

debian advisories DEBIAN-CVE-2026-23745

  • linux-sgx RHEL 9 2.26-7.el9
  • sgx-mpa RHEL 9 2.26-7.el9
  • tdx-qgs RHEL 9 2.26-7.el9
  • sgx-libs RHEL 9 2.26-7.el9
  • sgx-pccs RHEL 9 2.26-7.el9
  • sgx-common RHEL 9 2.26-7.el9
  • sgx-pccs-admin RHEL 9 2.26-7.el9
  • sgx-pckid-tool RHEL 9 2.26-7.el9

red hat advisories RHSA-2026:18868RHSA-2026:18480

  • sgx-mpa AlmaLinux 10 2.26-7.el10
  • tdx-qgs AlmaLinux 10 2.26-7.el10
  • sgx-libs AlmaLinux 10 2.26-7.el10
  • sgx-pccs AlmaLinux 10 2.26-7.el10
  • sgx-common AlmaLinux 10 2.26-7.el10
  • sgx-pccs-admin AlmaLinux 10 2.26-7.el10
  • sgx-pckid-tool AlmaLinux 10 2.26-7.el10
  • sgx-mpa AlmaLinux 9 2.26-7.el9

almalinux advisories ALSA-2026:18480ALSA-2026:18868

  • linux-sgx Rocky Linux 10 2.26-7.el10
  • linux-sgx Rocky Linux 9 2.26-7.el9

rocky linux advisories RLSA-2026:18480RLSA-2026:18868

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-23745 updated cvss 8.2

node-tar: tar: node-tar: Arbitrary file overwrite and symlink poisoning via unsanitized linkpaths in archives

  • Red Hat Confidential Compute Attestation openshift-sandboxed-containers/osc-pccs
    affected: workaround, no fix available
  • Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/kibana6-rhel8 Red Hat OpenShift Lightspeed openshift-lightspeed/lightspeed-to-dataverse-exporter-rhel9 Red Hat OpenShift Pipelines openshift-pipelines/pipelines-console-plugin-rhel8
    affected: workaround, no fix planned “Will not fix”
  • Red Hat OpenShift Serverless openshift-serverless-1/kn-eventing-integrations-transform-jsonata-rhel9
    affected: workaround, no fix available
  • Red Hat 3scale API Management Platform 2 3scale-amp20/system, 3scale-amp21/system, 3scale-amp22/system, 3scale-amp24/system, 3scale-amp25/system, 3scale-amp26/system, +3 more
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Connectivity Link 1 rhcl-1/rhcl-console-plugin-rhel9
    affected: workaround, no fix available
  • Red Hat Enterprise Linux 6 tar
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AI (RHEL AI) 3 rhelai3/bootc-cuda-rhel9 Red Hat Fuse 7 io.hawt-project
    affected: workaround, no fix planned “Will not fix”
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-dashboard-rhel8
    affected: workaround, no fix available
show 23 more
  • Red Hat OpenShift Container Platform 4 openshift4/ose-console-rhel9
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Openshift Data Foundation 4 odf4/mcg-core-rhel9, odf4/odf-console-rhel9
    affected: workaround, no fix available
  • Red Hat OpenShift GitOps openshift-gitops-1/argocd-rhel8
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Satellite 6 satellite/iop-remediations-rhel9
    affected: workaround, no fix available
  • Red Hat Network Observability (NETOBSERV) 1.11.0 network-observability 1771227650
    fixed: vendor fix RHSA-2026:2900
  • Red Hat Enterprise Linux AppStream (v. 9) sgx-mpa 2.26-7.el9, tdx-qgs 2.26-7.el9, sgx-libs 2.26-7.el9, sgx-pccs 2.26-7.el9, linux-sgx 2.26-7.el9, sgx-common 2.26-7.el9, +2 more
    fixed: vendor fix RHSA-2026:18868
  • Red Hat Enterprise Linux AppStream (v. 10) sgx-mpa 2.26-7.el10, tdx-qgs 2.26-7.el10, sgx-libs 2.26-7.el10, sgx-pccs 2.26-7.el10, linux-sgx 2.26-7.el10, sgx-common 2.26-7.el10, +2 more
    fixed: vendor fix RHSA-2026:18480
  • Red Hat Migration Toolkit 1.8 rhmtc/openshift-migration-ui-rhel8 1783690532
    fixed: vendor fix RHSA-2026:41928
  • Red Hat OpenShift AI 2.25 rhoai 1772093424
    fixed: vendor fix RHSA-2026:3782
  • Red Hat OpenShift AI 3.3 rhoai 1779189627
    fixed: vendor fix RHSA-2026:19712
  • Red Hat OpenShift Dev Spaces 3.27 devspaces 1774451954
    fixed: vendor fix RHSA-2026:6192
  • Red Hat Trusted Artifact Signer 1.2 rhtas 1770739056
    fixed: vendor fix RHSA-2026:2926
  • Red Hat Trusted Artifact Signer 1.3 rhtas 1770107452
    fixed: vendor fix RHSA-2026:2144
  • Red Hat Cryostat 4 io.cryostat-cryostat Red Hat Multicluster Engine for Kubernetes multicluster-engine/console-mce-rhel8, multicluster-engine/console-mce-rhel9
    not affected: component not present
  • Red Hat Network Observability (NETOBSERV) 1.11.0 network-observability 1771226060, network-observability 1771226629, network-observability 1771227610, network-observability 1771229282, network-observability 1771230433, network-observability 1771231259
    not affected: vulnerable code not present
  • Red Hat Node HealthCheck Operator workload-availability/node-remediation-console-rhel9
    not affected: vulnerable code not in execute path
  • Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/console-rhel9 Red Hat AMQ Broker 7 org.jolokia-jolokia-parent
    not affected: component not present
  • Red Hat Ansible Automation Platform 2 ansible-automation-platform-tech-preview/mcp-server-rhel9
    not affected: vulnerable code not present
  • Red Hat build of Apache Camel - HawtIO 4 io.hawt-project
    not affected: vulnerable code not in execute path
  • Red Hat Developer Hub 1 rhdh/rhdh-hub-rhel9 Red Hat Enterprise Linux 7 tar
    not affected: vulnerable code not present
  • Red Hat Enterprise Linux 8 npm, tar, nodejs, grafana, mozjs60, nodejs-libs, +17 more Red Hat Enterprise Linux 9 gjs, npm, tar, nodejs, polkit, grafana, +4 more
    not affected: vulnerable code not in execute path
  • Red Hat Enterprise Linux 10 tar, nodejs22, nodejs24 Red Hat Hardened Images tar
    not affected: component not present
  • Red Hat JBoss Enterprise Application Platform 7 io.hawt-project Red Hat JBoss Enterprise Application Platform 8 io.hawt-project
    not affected: vulnerable code not present

11 more not affected in the full advisory

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
9 mo ago

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/isaacs/node-tar/security/advisories/GHSA-8qq5-rm4j-mr97 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 8.2 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N
CISA ADP 3.1 8.2 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
CNA 4.0 8.2 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 6.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
CNA 3.1 8.2 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
npm tar
<7.5.3
7.5.3

Affected products

  • isaacs node-tar
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Network Observability (NETOBSERV) 1.11.0
  • Red Hat Red Hat Migration Toolkit 1.8
  • Red Hat Red Hat OpenShift AI 2.25
  • Red Hat Red Hat OpenShift AI 3.3
  • Red Hat Red Hat OpenShift Dev Spaces 3.27
  • Red Hat Red Hat Trusted Artifact Signer 1.2
  • Red Hat Red Hat Trusted Artifact Signer 1.3
  • Red Hat Confidential Compute Attestation
  • Red Hat Cryostat 4
  • Red Hat Logging Subsystem for Red Hat OpenShift
  • Red Hat Multicluster Engine for Kubernetes
  • Red Hat Node HealthCheck Operator
  • Red Hat OpenShift Lightspeed
  • Red Hat OpenShift Pipelines
  • Red Hat OpenShift Serverless
  • Red Hat Red Hat 3scale API Management Platform 2
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2
  • Red Hat Red Hat AMQ Broker 7
  • Red Hat Red Hat Ansible Automation Platform 2
  • Red Hat Red Hat build of Apache Camel - HawtIO 4
  • Red Hat Red Hat Connectivity Link 1
  • Red Hat Red Hat Developer Hub
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux AI (RHEL AI) 3
  • Red Hat Red Hat Fuse 7
  • Red Hat Red Hat Hardened Images
  • Red Hat Red Hat JBoss Enterprise Application Platform 7
  • Red Hat Red Hat JBoss Enterprise Application Platform 8
  • Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack
  • Red Hat Red Hat OpenShift AI (RHOAI)
  • Red Hat Red Hat OpenShift Container Platform 4
  • Red Hat Red Hat Openshift Data Foundation 4
  • Red Hat Red Hat OpenShift GitOps
  • Red Hat Red Hat Process Automation 7
  • Red Hat Red Hat Quay 3
  • Red Hat Red Hat Satellite 6
  • Red Hat Red Hat Single Sign-On 7

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.