Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-31802— node-tar Symlink Path Traversal via Drive-Relative Linkpath

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 7.5.11之前版本存在安全漏洞，该漏洞源于可诱骗其通过驱动器相对符号链接目标创建指向提取目录外的符号链接，可能导致文件覆盖。

AI Predicted 7.5 Difficulty: Easy EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-31802

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
node-tar Symlink Path Traversal via Drive-Relative Linkpath
Source: CVE Program / CVE List V5
Vulnerability Description
node-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extraction directory by using a drive-relative symlink target such as C:../../../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This vulnerability is fixed in 7.5.11.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA: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 安全漏洞
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 7.5.11之前版本存在安全漏洞，该漏洞源于可诱骗其通过驱动器相对符号链接目标创建指向提取目录外的符号链接，可能导致文件覆盖。
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 < 7.5.11 -

II. Public POCs for CVE-2026-31802

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-31802

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-31802 (1)

Vendor Advisories for CVE-2026-31802 (1)

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-31802

No comments yet

Leave a comment