CVE-2026-29786

Description

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.

Overview

State: PUBLISHED
Assigner (CNA): GitHub_M
CVSS severity: HIGH
CVSS score: 8.2 / 10
CVSS vector: 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
Effective score: 8.2 / 10 HIGH source: CNA overview
MSRC score: 6.3 / 10 MEDIUM MS rating: Important
CWE(s): CWE-22, CWE-59
Reserved: 2026-03-04
Published: 2026-03-07 16:32 UTC
Last updated: 2026-03-09 19:26 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/29xxx/CVE-2026-29786.json
Linked Threat: CVE-2026-29786 — node-tar: Hardlink Path Traversal via Drive-Relative Linkpath

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-03-07 16:15:55 UTC
NVD last modified: 2026-03-11 21:50:01 UTC
NVD CVSS v3.1: 6.3 / 10 MEDIUM source: nvd@nist.gov
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
Exploitability subscore: 1.8 / 10
Impact subscore: 4.0 / 10
EPSS score: 0.0001 (probability of exploitation in next 30 days)
EPSS percentile: 0.92% vs all CVEs — higher = more likely to be exploited, as of 2026-05-25

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-10164
Assigner: GitHub_M
Published: Mar 7, 2026, 3:32:22 PM
Updated: Mar 9, 2026, 6:26:34 PM
EUVD base score (CVSS 4.0): 8.2 / 10
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
EUVD-reported EPSS: 0.0100
Vendors: isaacs
Products: node-tar (< 7.5.10)
Aliases: GHSA-qffp-2rhf-9h96

ENISA description: 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.

EUVD references (2)

Microsoft Security Response Center MSRC

Microsoft's vendor-authoritative record from the Security Update Guide — its own CVSS score, impact, severity rating, exploit assessment, and KB-article fixes. Refreshed 2026-08-12 01:05 UTC (source: CVRF).

MS severity: Important
MS CVSS base score: 6.3 / 10 (temporal 6.3)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
Release: 2026-Mar

Affected products (1)

Vendor	Product	Versions	Platforms
isaacs	node-tar	`< 7.5.10` (affected)	—

Affected products — CPE 2.3 (1) NVD

NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.

cpe:2.3:a:isaacs:tar:*:*:*:*:*:node.js:*:*

Vendor references (2)

References embedded in the original CVE record by the assigning CNA.

https://github.com/isaacs/node-tar/security/advisories/GHSA-qffp-2rhf-9h96 x_refsource_CONFIRM
https://github.com/isaacs/node-tar/commit/7bc755dd85e623c0279e08eb3784909e6d7e4b9f x_refsource_MISC

Web references (11)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

MSRC update guide: CVE-2026-29786 msrc
https://www.atlassian.com/software/jira/download-archives rapid7:www.atlassian.com
https://jira.atlassian.com/browse/JSWSERVER-26786 rapid7:jira.atlassian.com
https://alas.aws.amazon.com/AL2023/ALAS-2026-1484.html rapid7:alas.aws.amazon.com
https://alas.aws.amazon.com/AL2023/ALAS-2026-1609.html rapid7:alas.aws.amazon.com
https://attackerkb.com/topics/CVE-2026-29786 rapid7:attackerkb.com
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-10164 rapid7:euvd.enisa.europa.eu
http://cwe.mitre.org/data/definitions/22.html rapid7:cwe.mitre.org
https://www.cve.org/CVERecord?id=CVE-2026-29786 rapid7:www.cve.org
http://cwe.mitre.org/data/definitions/59.html rapid7:cwe.mitre.org
https://alas.aws.amazon.com/AL2023/ALAS-2026-1483.html rapid7:alas.aws.amazon.com

NVD-tagged references (2)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://github.com/isaacs/node-tar/commit/7bc755dd85e623c0279e08eb3784909e6d7e4b9f security-advisories@github.com Patch
https://github.com/isaacs/node-tar/security/advisories/GHSA-qffp-2rhf-9h96 security-advisories@github.com ExploitVendor Advisory

Indicators (2)

IOCs linked to the auto-promoted Threat row.

Type	Value	VirusTotal	Attached
domain	`node.js`	no local data	2026-05-18 21:18 UTC
domain	`target.txt`	no local data	2026-05-18 21:18 UTC

Remediations (13)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

Patch Tuesday, May 2026 Edition - Krebs on Security

web:krebsonsecurity.com

Microsoft expects that exploitation is more likely. May's Patch Tuesday is a welcome respite from April, which saw Microsoft fix a near-record 167 security flaws.

2026-05-22 16:30 UTC
Microsoft Releases Guidance on High-Severity Vulnerability (CVE-2025 ...

web:cisa.gov

Update (08/12/2025): CISA has updated this alert to provide clarification on identifying Exchange Servers on an organization's networks and provided further guidance on running the Microsoft Exchange Health Checker. Update (08/07/2025): CISA issued Emergency Directive (ED) 25-02: Mitigate Microsoft Exchange Vulnerability in response to CVE -2025-53786

2026-05-22 16:30 UTC
CVE-2026-29786 - Vulnerability Details - OpenCVE

web:app.opencve.io

Remediation No vendor fix or workaround currently provided. OpenCVE Recommended Actions Update node-tar to version 7.5.10 or later to apply the vendor patch If an upgrade is not immediately feasible, disable hardlink support in tar extraction options or validate extracted paths to ensure they resolve within the intended directory

2026-05-22 16:30 UTC
Security Update Guide - Microsoft

web:portal.msrc.microsoft.com

The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

2026-05-22 03:00 UTC
CVE-2026-29786 : Node.js Tar Package Vulnerability Allows File ...

web:securityvulnerability.io

Explore the node-tar vulnerability allowing file overwrites outside the extraction directory. Learn about CVE-2026-29786 and its impact.

2026-05-22 03:00 UTC
CVE-2026-29786 - vulmon.com

web:vulmon.com

📦 CVE-2026-29786 : Nodejs Tar Symlink Vulnerability 📌 Executive Summary This repository documents research into CVE-2026-29786 , a high-severity vulnerability discovered in the popular Nodejs tar package The flaw allows an attacker to create a malicious tar archive that, when extracted, uses symlinks to overwrite files outside the intended ...

2026-05-22 03:00 UTC
Microsoft March 2026 Patch Tuesday fixes 2 zero-days, 79 flaws

web:www.bleepingcomputer.com

Today is Microsoft's March 2026 Patch Tuesday with security updates for 79 flaws, including 2 publicly disclosed zero-day vulnerabilities.

2026-05-22 03:00 UTC
Oracle Critical Patch Update Advisory - April 2026

web:www.oracle.com

This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

2026-05-22 03:00 UTC
CVE-2026-29786: Isaacs Tar Path Traversal Vulnerability - SentinelOne

web:www.sentinelone.com

CVE-2026-29786 is a path traversal vulnerability in Isaacs Tar (node-tar). Learn about its impact, affected versions, and mitigation methods.

2026-05-22 03:00 UTC
Windows 11 April 2026 Update tested: What's new, improved and fixed

web:www.windowslatest.com

Windows 11 April 2026 update adds Narrator Copilot support, faster Settings, File Explorer fixes, and key security improvements.

2026-05-22 03:00 UTC
Patch Tuesday May 2026: Security Updates & CVE Analysis

web:zecurit.com

Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

2026-05-22 03:00 UTC
Microsoft and Adobe Patch Tuesday, May 2026 Security Update Review

web:blog.qualys.com

May 2026's Patch Tuesday arrives with Microsoft addressing a fresh set of vulnerabilities across its ecosystem, reinforcing the ongoing need for timely patching in an increasingly threat-heavy…

2026-05-22 03:00 UTC
Microsoft Patch Tuesday May 2026 - 120 Vulnerabilities Fixed, Including ...

web:cybersecuritynews.com

Microsoft's May 2026 Patch Tuesday lands with a heavy enterprise focus, fixing 120 vulnerabilities across Windows, Office, Azure, developer tools, and Microsoft 365 apps, including 29 remote code execution (RCE) flaws rated Critical.

2026-05-22 03:00 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-29786.json.

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