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CVE-2026-19693— extract-zip arbitrary file write outside the destination directory via a symlink at the final path component

Quick assessment

Affected
max-mapper extract-zip
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Max extract-zip是Max个人开发者的一个文件解压缩工具。 Max extract-zip 2.0.1及之前版本存在安全漏洞，该漏洞源于仅检查每个归档条目的父目录而未检查条目自身的最终路径组件，导致包含同名符号链接和普通文件的归档可写入目标目录之外的任意文件。

CVSS 8.1 · High EPSS 0.28% · P20

Affected Version Matrix 1

VendorProduct Version RangeStatus
max-mapper extract-zip 1.0.0≤ 2.0.1 affected
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I. Basic Information for CVE-2026-19693

Vulnerability Information
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Vulnerability Title
extract-zip arbitrary file write outside the destination directory via a symlink at the final path component
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
Max extract-zip 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Max extract-zip是Max个人开发者的一个文件解压缩工具。 Max extract-zip 2.0.1及之前版本存在安全漏洞，该漏洞源于仅检查每个归档条目的父目录而未检查条目自身的最终路径组件，导致包含同名符号链接和普通文件的归档可写入目标目录之外的任意文件。
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
max-mapper extract-zip 1.0.0 ~ 2.0.1 -

II. Public POCs for CVE-2026-19693

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Reproduced successfully in a real sandbox · Below is the actual recording of building the environment and exploiting the vulnerability.
Reproduction recording is a Pro+ exclusive
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claude_code · 9511 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
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III. Intelligence Information for CVE-2026-19693

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Other References for CVE-2026-19693 (1)

IV. Related Vulnerabilities

Same product: extract-zip
Same vendor: max-mapper
Same weakness: CWE-59

V. Comments for CVE-2026-19693

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