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TI-2018-14798 Aliases CVE-2018-20834GHSA-j44m-qm6p-hp7m

A vulnerability was found in node-tar before version 4.4.2 (excluding version 2.2.2).

Priority LOW 39CWE-59Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA, GitHub and Red Hat.

Summary

A vulnerability was found in node-tar before version 4.4.2 (excluding version 2.2.2). An Arbitrary File Overwrite issue exists when extracting a tarball containing a hardlink to a file that already exists on the system, in conjunction with a later plain file with the same name as the hardlink. This plain file content replaces the existing file content. A patch has been applied to node-tar v2.2.2).

Why it matters now

EPSS 0.03145 88th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed tar (npm): 4.4.2, 2.2.2Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—tar (npm)3.0.0 to before 4.4.24.4.2Patch availableGHSA-j44m-qm6p-hp7m
—tar (npm)before 2.2.22.2.2Patch availableGHSA-j44m-qm6p-hp7m
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • tar (npm) Vendor— Affected 3.0.0 to before 4.4.2 Fixed in 4.4.2 Patch available GHSA-j44m-qm6p-hp7m
  • tar (npm) Vendor— Affected before 2.2.2 Fixed in 2.2.2 Patch available GHSA-j44m-qm6p-hp7m

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:isaacs:tar:*:*:*:*:*:*:*:*before 2.2.2; 3.0.0 to before 4.4.2Vulnerableisaacs
  • cpe:2.3:a:isaacs:tar:*:*:*:*:*:*:*:* Versions before 2.2.2; 3.0.0 to before 4.4.2 Vulnerable ·isaacs

Remediation

  • Fix · GHSA-j44m-qm6p-hp7m tar (npm) Fixed in 4.4.2 Advisory →
  • Fix · GHSA-j44m-qm6p-hp7m tar (npm) Fixed in 2.2.2 Advisory →

Red Hat 1 advisory

  • RHSA-2019:1821 Released 2019-07-22 · Red Hat rating Important
    rh-nodejs8-nodejs security update
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-nodejs8-nodejs-8.16.0-1.el7, rh-nodejs8-nodejs-devel-8.16.0-1.el7, rh-nodejs8-nodejs-docs-8.16.0-1.el7 +1
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) rh-nodejs8-nodejs-8.16.0-1.el7, rh-nodejs8-nodejs-devel-8.16.0-1.el7, rh-nodejs8-nodejs-docs-8.16.0-1.el7 +1
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) rh-nodejs8-nodejs-8.16.0-1.el7, rh-nodejs8-nodejs-devel-8.16.0-1.el7, rh-nodejs8-nodejs-docs-8.16.0-1.el7 +1
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) rh-nodejs8-nodejs-8.16.0-1.el7, rh-nodejs8-nodejs-devel-8.16.0-1.el7, rh-nodejs8-nodejs-docs-8.16.0-1.el7 +1
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-nodejs8-nodejs-8.16.0-1.el7, rh-nodejs8-nodejs-devel-8.16.0-1.el7, rh-nodejs8-nodejs-docs-8.16.0-1.el7 +1

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2019:1821
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4)Fixed RHSA-2019:1821
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5)Fixed RHSA-2019:1821
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6)Fixed RHSA-2019:1821
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2019:1821
Not affected: 10 products
  • Logging Subsystem for Red Hat OpenShift
  • Red Hat Enterprise Linux 8
  • Red Hat Mobile Application Platform 4
  • Red Hat OpenShift Container Platform 3.10
  • Red Hat OpenShift Container Platform 3.11
  • Red Hat OpenShift Container Platform 3.6
  • Red Hat OpenShift Container Platform 3.7
  • Red Hat OpenShift Container Platform 3.9
  • Red Hat OpenShift Container Platform 4
  • Red Hat Software Collections

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-20834
  2. 2026-10-03 Alias added: GHSA-j44m-qm6p-hp7m

References

Exploit 1

Patch 2

Advisory 2

Other 3

  • TI-2026-42687 node-tar: Decompression/parse DoS via unlimited input CVSS 4.0CRITICAL 9.2
  • TI-2026-42688 node-tar: Negative tar entry size causes infinite loop in archive replace CVSS 4.0HIGH 8.7
  • TI-2026-42686 node-tar: Process crash via PAX numeric path type confusion CVSS 3.1HIGH 7.5
  • TI-2026-24357 node-tar Symlink Path Traversal via Drive-Relative Linkpath CVSS 4.0HIGH 8.2
  • TI-2026-23372 node-tar: Hardlink Path Traversal via Drive-Relative Linkpath CVSS 4.0HIGH 8.2
  • TI-2026-20041 node-tar Vulnerable to Arbitrary File Creation/Overwrite via Hardlink Path Traversal CVSS 3.1HIGH 8.2
See all 11 →

Sources

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