CVE-2026-19693: Extract zip Extract-zip Allows Arbitrary File Writes Vulnerability

HIGH
Advisory Identifier: GHSA-7pqw-9j4j-h8q3
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CVSS 8.1
CWE-22
Published
Advisory Summary

CVE-2026-19693 is a HIGH (CVSS 8.1) extract-zip allows arbitrary file writes vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Extract zip libraries in the npm ecosystem. The issue involves extract-zip allows arbitrary file writes through symlink archive entries. Remediation is available in the latest vendor maintenance releases.

CVE-2026-19693 at a Glance

CVE Identifier CVE-2026-19693
GHSA Identifier GHSA-7pqw-9j4j-h8q3
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Extract zip
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 8.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-19693

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

extract-zip fixed: Latest secure release 
npm install extract-zip@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 extract-zip

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-19693, inspect your project dependencies using npm:

npm ls extract-zip

Analyze the terminal output to locate any version of Extract zip 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 extract-zip 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 Extract zip, 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

extract-zip through 2.0.1 containment-checks only the parent directory of each archive entry and never the entry's own final path component, so an archive containing two entries with identical names - a symlink whose target is outside the destination, followed by a regular file - writes through the planted symlink and yields an arbitrary file write outside the destination directory.

CVE-2026-19693 Affected Extract zip Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
extract-zip
npm/extract-zip
npm
≤ 2.0.1

References

NVD — CVE-2026-19693 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-19693
Extract zip Source Repository REPOSITORY
https://github.com/max-mapper/extract-zip/pull/160
Extract zip Source Repository REPOSITORY
https://github.com/max-mapper/extract-zip
www.npmjs.com/package/extract-zip WEB
https://www.npmjs.com/package/extract-zip

Frequently Asked Questions

What is CVE-2026-19693?
CVE-2026-19693 is a security vulnerability in Extract zip involving extract-zip allows arbitrary file writes through symlink archive entries under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Extract zip versions are affected?
Affected versions include releases prior to current release patches across affected packages: extract-zip.
What version fixes CVE-2026-19693?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is extract-zip affected?
Yes, extract-zip is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2026-19693?
CVE-2026-19693 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H.
What CWE is associated with CVE-2026-19693?
CVE-2026-19693 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-2026-19693?
Run the dependency tree command: 'npm ls extract-zip'. 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-7pqw-9j4j-h8q3",
  "modified" : "2026-09-08T20:42:52Z",
  "published" : "2026-08-17T15:30:40Z",
  "aliases" : [ "CVE-2026-19693" ],
  "summary" : "extract-zip allows arbitrary file writes through symlink archive entries",
  "details" : "extract-zip through 2.0.1 containment-checks only the parent directory of each archive entry and never the entry's own final path component, so an archive containing two entries with identical names - a symlink whose target is outside the destination, followed by a regular file - writes through the planted symlink and yields an arbitrary file write outside the destination directory.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "extract-zip"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.0.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-19693"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/max-mapper/extract-zip/pull/160"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/max-mapper/extract-zip"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/package/extract-zip"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-08T20:42:52Z",
    "nvd_published_at" : "2026-08-17T14:20:20Z"
  }
}