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CVE-2026-24842— node-tar Vulnerable to Arbitrary File Creation/Overwrite via Hardlink Path Traversal

Quick assessment

Affected
isaacs node-tar
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

node-tar是isaacs个人开发者的一款用于文件压缩/解压缩的软件包。 node-tar 7.5.7之前版本存在后置链接漏洞，该漏洞源于硬链接条目的安全检查与创建逻辑不匹配，可能导致绕过路径遍历保护。

CVSS 8.2 · High EPSS 0.62% · P48

Affected Version Matrix 1

VendorProduct Version RangeStatus
isaacs node-tar < 7.5.7 affected
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I. Basic Information for CVE-2026-24842

Vulnerability Information
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Vulnerability Title
node-tar Vulnerable to Arbitrary File Creation/Overwrite via Hardlink Path Traversal
Source: CVE Program / CVE List V5
Vulnerability Description
node-tar,a Tar for Node.js, contains a vulnerability in versions prior to 7.5.7 where the security check for hardlink entries uses different path resolution semantics than the actual hardlink creation logic. This mismatch allows an attacker to craft a malicious TAR archive that bypasses path traversal protections and creates hardlinks to arbitrary files outside the extraction directory. Version 7.5.7 contains a fix for the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
node-tar 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
node-tar是isaacs个人开发者的一款用于文件压缩/解压缩的软件包。 node-tar 7.5.7之前版本存在后置链接漏洞，该漏洞源于硬链接条目的安全检查与创建逻辑不匹配，可能导致绕过路径遍历保护。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
isaacs node-tar < 7.5.7 -

II. Public POCs for CVE-2026-24842

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III. Intelligence Information for CVE-2026-24842

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Vendor Advisories for CVE-2026-24842 (1)

IV. Related Vulnerabilities

Same product: node-tar
Same vendor: isaacs
Same weakness: CWE-22

V. Comments for CVE-2026-24842

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