CVE-2025-69874: Nanotar Path Traversal Vulnerability

MODERATE
Advisory Identifier: GHSA-92fh-27vv-894w
Share
CWE-22
Published
Advisory Summary

CVE-2025-69874 is a MODERATE path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Nanotar libraries in the npm ecosystem. The issue involves nanotar is vulnerable to path traversal in parsetar() and parsetargzip(). Remediation is available in the latest vendor maintenance releases.

CVE-2025-69874 at a Glance

CVE Identifier CVE-2025-69874
GHSA Identifier GHSA-92fh-27vv-894w
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Nanotar
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2025-69874

To remediate this vulnerability, upgrade all affected Nanotar dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

nanotar fixed: Latest secure release 
npm install nanotar@Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls nanotar

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2025-69874, inspect your project dependencies using npm:

npm ls nanotar

Analyze the terminal output to locate any version of Nanotar in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The npm ls nanotar command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Nanotar, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

nanotar through 0.2.0 has a path traversal vulnerability in parseTar() and parseTarGzip() that allows remote attackers to write arbitrary files outside the intended extraction directory via a crafted tar archive containing path traversal sequence.

CVE-2025-69874 Affected Nanotar Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
nanotar
npm/nanotar
npm
≤ 0.2.0

References

NVD — CVE-2025-69874 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-69874
Nanotar Source Repository REPOSITORY
https://github.com/EthanKim88/ethan-cve-disclosures/blob/main/CVE-2025-69874-nanotar-Path-Traversal.md
Nanotar Source Repository REPOSITORY
https://github.com/unjs/nanotar
www.npmjs.com/package/nanotar WEB
https://www.npmjs.com/package/nanotar

Frequently Asked Questions

What is CVE-2025-69874?
CVE-2025-69874 is a security vulnerability in Nanotar involving nanotar is vulnerable to path traversal in parseTar() and parseTarGzip() under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Nanotar versions are affected?
Affected versions include releases prior to current release patches across affected packages: nanotar.
What version fixes CVE-2025-69874?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is nanotar affected?
Yes, nanotar is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What CWE is associated with CVE-2025-69874?
CVE-2025-69874 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check npm dependencies for CVE-2025-69874?
Run the dependency tree command: 'npm ls nanotar'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-92fh-27vv-894w",
  "modified" : "2026-02-11T18:56:22Z",
  "published" : "2026-02-11T18:31:30Z",
  "aliases" : [ "CVE-2025-69874" ],
  "summary" : "nanotar is vulnerable to path traversal in parseTar() and parseTarGzip()",
  "details" : "nanotar through 0.2.0 has a path traversal vulnerability in parseTar() and parseTarGzip() that allows remote attackers to write arbitrary files outside the intended extraction directory via a crafted tar archive containing path traversal sequence.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "nanotar"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.2.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-69874"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/EthanKim88/ethan-cve-disclosures/blob/main/CVE-2025-69874-nanotar-Path-Traversal.md"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/unjs/nanotar"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/package/nanotar"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-02-11T18:56:22Z",
    "nvd_published_at" : "2026-02-11T18:16:05Z"
  }
}