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Fencer Intel
high 8.6

CVE-2026-29786 json

node-tar: Hardlink Path Traversal via Drive-Relative Linkpath

published 8mo ago modified last mo. also EUVD-2026-10164 , GHSA-qffp-2rhf-9h96

cvss
8.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits
0
none known

Summary

node-tar is a full-featured Tar for Node.js. Prior to version 7.5.10, tar can be tricked into creating a hardlink that points outside the extraction directory by using a drive-relative link target such as C:../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This issue has been patched in version 7.5.10.

Patch / fix

  • npm tar 7.5.10
  • isaacs tar 7.5.10
  • tar_project tar 7.5.10
  • 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+~cs6.1.13-8

debian advisories DEBIAN-CVE-2026-29786

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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-2026-29786 updated cvss 8.6

node-tar: hardlink path traversal via drive-relative linkpath

  • Red Hat Cryostat 4 io.cryostat-cryostat Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/kibana6-rhel8, openshift-logging/elasticsearch6-rhel9, openshift-logging/logging-curator5-rhel9, openshift-logging/elasticsearch-proxy-rhel9, openshift-logging/elasticsearch-rhel9-operator, openshift-logging/elasticsearch-operator-bundle Red Hat Network Observability Operator network-observability/network-observability-console-plugin-rhel9, network-observability/network-observability-console-plugin-compat-rhel9 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 Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/console-rhel9, rhacm2/volsync-rhel9, rhacm2/volsync-operator-bundle Red Hat AMQ Broker 7 org.jolokia-jolokia-parent
    +15 more products
    Red Hat build of Apache Camel - HawtIO 4 io.hawt-project Red Hat Enterprise Linux 8 npm, nodejs, grafana, mozjs60, nodejs-libs, grafana-loki, +16 more Red Hat Enterprise Linux 9 gjs, npm, nodejs, grafana, sgx-mpa, tdx-qgs, +9 more Red Hat Enterprise Linux 10 nodejs22, nodejs24, linux-sgx Red Hat Fuse 7 io.hawt-project, io.apicurio-apicurito, io.hawt-hawtio-online, io.syndesis-syndesis-parent Red Hat JBoss Enterprise Application Platform 7 io.hawt-project, org.jboss.hal-hal-parent Red Hat JBoss Enterprise Application Platform 8 io.hawt-project, org.keycloak-keycloak-parent Red Hat JBoss Enterprise Application Platform Expansion Pack io.hawt-project, org.keycloak-keycloak-parent Red Hat OpenShift AI (RHOAI) rhoai/odh-notebook-controller-rhel8, rhoai/odh-kf-notebook-controller-rhel8, rhoai/odh-data-science-pipelines-argo-argoexec-rhel8, rhoai/odh-data-science-pipelines-argo-workflowcontroller-rhel8 Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-8, openshift/ose-rhel-coreos-9, openshift4/ose-console-rhel9 Red Hat Openshift Data Foundation 4 odf4/mcg-core-rhel9, odf4/odf-console-rhel9, odf4/ocs-client-console-rhel9, odf4/odf-multicluster-console-rhel9 Red Hat OpenShift Dev Spaces devspaces/code-rhel9, devspaces/code-sshd-rhel9, devspaces/dashboard-rhel9, devspaces/machineexec-rhel9 Red Hat Process Automation 7 org.uberfire-uberfire-parent, org.kie.workbench-kie-wb-common Red Hat Single Sign-On 7 org.keycloak-keycloak-parent Red Hat Trusted Artifact Signer rhtas/rekor-search-ui-rhel9
    not affected: vulnerable code not present

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
8mo ago

Exploit prediction

0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/isaacs/node-tar/security/advisories/GHSA-qffp-2rhf-9h96 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:P/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L
CISA ADP 3.1 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
CNA 4.0 8.2 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L/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 6.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
CNA 3.1 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
npm tar
<7.5.10
7.5.10

Affected products

  • isaacs node-tar
  • Red Hat Cryostat 4
  • Red Hat Logging Subsystem for Red Hat OpenShift
  • Red Hat Network Observability Operator
  • 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 build of Apache Camel - HawtIO 4
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Fuse 7
  • 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 Dev Spaces
  • Red Hat Red Hat Process Automation 7
  • Red Hat Red Hat Single Sign-On 7
  • Red Hat Red Hat Trusted Artifact Signer

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory
  • CWE-59 Improper Link Resolution Before File Access

References

Sources

Fencer Intel 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.