CVE-2026-23745
node-tar Vulnerable to Arbitrary File Overwrite and Symlink Poisoning via Insufficient Path Sanitization
Description
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.
INFO
Published Date :
Jan. 16, 2026, 10:16 p.m.
Last Modified :
Feb. 18, 2026, 4:20 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update the node-tar library to version 7.5.3 or newer.
- Review archive extraction logic for path sanitization.
- Ensure preservePaths is enabled if possible.
Public PoC/Exploit Available at Github
CVE-2026-23745 has a 5 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-23745.
| URL | Resource |
|---|---|
| https://github.com/isaacs/node-tar/commit/340eb285b6d986e91969a1170d7fe9b0face405e | Patch |
| https://github.com/isaacs/node-tar/security/advisories/GHSA-8qq5-rm4j-mr97 | Exploit Patch Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-23745 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-23745
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Mirror of https://github.com/nomi-sec/PoC-in-GitHub
Proof of Concept for CVE-2026-23745: Arbitrary File Overwrite vulnerability in node-tar (versions < 7.5.3).
arbitrary-file-overwrite cve node-tar path-traversal poc security-research vulnerability cve-2026-23745 symlink-poisoning
JavaScript
# مستودع asrar-mared هذا هو المستودع الرئيسي لمجموعة **المارد الرقمي**، نقطة التحكم المركزية التي تجمع كل المشاريع والميول التقنية تحت راية واحدة. يمثل الأساس الذي تُبنى عليه الفروع الأخرى، ويُدار منه كل شيء من تنظيم الكود إلى إدارة المجتمع. للاطلاع على المستودع: [asrar-mared](https://github.com/asrar-mared)
HTML CSS
TOP All bugbounty pentesting CVE-2023- POC Exp RCE example payload Things
bugbounty cve exp exploit payload poc rce vulnerability
Shell
📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.
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Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-23745 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-23745 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 18, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N Added CPE Configuration OR *cpe:2.3:a:isaacs:tar:*:*:*:*:*:node.js:*:* versions up to (excluding) 7.5.3 Added Reference Type GitHub, Inc.: https://github.com/isaacs/node-tar/commit/340eb285b6d986e91969a1170d7fe9b0face405e Types: Patch Added Reference Type GitHub, Inc.: https://github.com/isaacs/node-tar/security/advisories/GHSA-8qq5-rm4j-mr97 Types: Exploit, Patch, Vendor Advisory -
New CVE Received by [email protected]
Jan. 16, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V4.0 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 Added CWE CWE-22 Added Reference https://github.com/isaacs/node-tar/commit/340eb285b6d986e91969a1170d7fe9b0face405e Added Reference https://github.com/isaacs/node-tar/security/advisories/GHSA-8qq5-rm4j-mr97